diff --git a/.gitignore b/.gitignore
index 02ebca1..8ed1e58 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,4 @@
 *.DS_Store
 *.env
-test.py
-demoData/*
-dummyData/*
-users.txt
+test*.*
 __pycache__/*
\ No newline at end of file
diff --git a/functions.py b/functions.py
index c918d56..2be0eb9 100644
--- a/functions.py
+++ b/functions.py
@@ -76,3 +76,10 @@ def addZeroesUntil(str, number):
     else:
         str = str + '0'
         return addZeroesUntil(str, number)
+
+
+# MANAGE
+def removeprefix(s, prefix):
+    if s.startswith(prefix):
+        return s[len(prefix):]
+    return s
diff --git a/manage.py b/manage.py
index e5d60b4..12f6b95 100644
--- a/manage.py
+++ b/manage.py
@@ -3,12 +3,6 @@ from functions import *
 manage = Blueprint('manage', __name__)
 
 
-def removeprefix(s, prefix):
-    if s.startswith(prefix):
-        return s[len(prefix):]
-    return s
-
-
 def manageProcess(fCommand, fData):
     if (check_login_status()):
         return redirect('/logout')
@@ -134,8 +128,8 @@ def manageProcess(fCommand, fData):
                         absData[p][h[0]][h[1]][num] = {
                             "name": hrData[num]['name'],
                             "eng_name": hrData[num]['eng_name'],
-                            "alr_fill": ('signature' in tmpAbsData[currDate][p] and
-                                         cclass['class_id'] in tmpAbsData[currDate][p]['signature']),
+                            "alr_fill": (('signature' in tmpAbsData[currDate][p]) and
+                                         (cclass['class_id'] in tmpAbsData[currDate][p]['signature'] or 'STUD_AFFAIR_OFFICE' in tmpAbsData[currDate][p]['signature'])),
                             "absent": False if not num in tmpAbsData[currDate][p] else tmpAbsData[currDate][p][num]
                         }
         return render_template('group_teach.html', dateKeys=sorted(tmpAbsData.keys()), cclass=cclass, absData=absData, dow=dow, currDate=currDate, tmpAbsData=tmpAbsData, confirmed=confirmed)
@@ -254,8 +248,6 @@ def group_teach_publish():
         else:
             db.child("Homerooms").child(h[0]).child(h[1]).child(
                 "Absent").child(date).child(period).update({'notes': notes}, session['token'])
-
-    # upload notes
     os.remove(os.path.join('temp', rand))
     return redirect('/manage')
 
@@ -269,15 +261,6 @@ def homeroom_abs_publish():
     homeroom = request.form['homeroom'].split('^')
     period = request.form['period']
     signature = request.form['signatureData']
-    if (request.form['stype'] == 'edit'):
-        oldData = list(db.child("Homerooms").child(homeroom[0]).child(homeroom[1]).child(
-            "Absent").child(date).child(period).shallow().get(session['token']).val())
-        print(oldData, type(oldData))
-        for k in oldData:
-            if k == 'name' or k == 'teacher':
-                continue
-            db.child("Homerooms").child(homeroom[0]).child(homeroom[1]).child(
-                "Absent").child(date).child(period).child(k).remove(session['token'])
     formData = request.form.to_dict()
     notes = ""
     if "confirm" in db.child("Homerooms").child(homeroom[0]).child(homeroom[1]).child("Absent").child(date).get(session['token']).val():
@@ -310,6 +293,52 @@ def homeroom_abs_publish():
     return redirect('/manage')
 
 
+@manage.route('/manage/edit_abs', methods=['POST'])
+def edit_abs():
+    if (check_login_status() or not check_permission()):
+        return redirect('/logout')
+    refresh_token()
+    date = request.form['date']
+    homeroom = request.form['homeroom'].split('^')
+    period = request.form['period']
+    signature = "https://firebasestorage.googleapis.com/v0/b/attendance-be176.appspot.com/o/stud_affairs.png?alt=media"
+    formData = request.form.to_dict()
+    notes = ""
+    oldData = list(db.child("Homerooms").child(homeroom[0]).child(homeroom[1]).child(
+        "Absent").child(date).child(period).shallow().get(session['token']).val())
+    for k in oldData:
+        if k == 'name' or k == 'teacher':
+            continue
+        db.child("Homerooms").child(homeroom[0]).child(homeroom[1]).child(
+            "Absent").child(date).child(period).child(k).remove(session['token'])
+    cfrmstatus = db.child("Homerooms").child(homeroom[0]).child(
+        homeroom[1]).child("Absent").child(date).get(session['token']).val()
+    if "confirm" in cfrmstatus:
+        db.child("Homerooms").child(homeroom[0]).child(homeroom[1]).child(
+            "Absent").child(date).update({'notes': cfrmstatus['notes'] + '; (確認後學務處有更改)'}, session['token'])
+    if 'notes' in request.form:
+        notes = request.form['notes']
+        formData.pop('notes')
+    formData.pop('date')
+    formData.pop('homeroom')
+    formData.pop('period')
+    for i in formData:
+        i = i.split('^')
+        db.child("Homerooms").child(homeroom[0]).child(
+            homeroom[1]).child("Absent").child(date).child(period).update({i[1]: int(i[0])}, session['token'])
+    db.child("Homerooms").child(homeroom[0]).child(homeroom[1]).child(
+        "Absent").child(date).child(period).update({'notes': notes}, session['token'])
+    if cfrmstatus[period]['name'] == 'GP':
+        db.child("Homerooms").child(homeroom[0]).child(
+            homeroom[1]).child("Absent").child(date).child(period).child("signature").set({'STUD_AFFAIR_OFFICE': signature}, session['token'])
+        db.child("Homerooms").child(homeroom[0]).child(
+            homeroom[1]).child("Absent").child(date).child(period).child("names").set({'STUD_AFFAIR_OFFICE': "學務處已編輯"}, session['token'])
+    else:
+        db.child("Homerooms").child(homeroom[0]).child(
+            homeroom[1]).child("Absent").child(date).child(period).child("signature").set(signature, session['token'])
+    return redirect('/manage/admin/'+homeroom[0]+'/'+homeroom[1]+'/'+date)
+
+
 @manage.route('/manage/homeroom_confirm', methods=['POST'])
 def homeroom_confirm():
     if (check_login_status()):
diff --git a/static/pagejs/admin.js b/static/pagejs/admin.js
index 4ca9ea8..67f68ef 100644
--- a/static/pagejs/admin.js
+++ b/static/pagejs/admin.js
@@ -24,3 +24,55 @@ function redirAdmin() {
     $('.container').hide();
     $('#loading').show();
 }
+
+function edit(string) {
+    $('.view-' + string).each(function (i, obj) {
+        var num = $(this.firstElementChild).attr('class').split(' ')[2].replace('view-n-', '');
+        if ($(this.firstElementChild).attr('class').split(' ')[1] == "n-1") {
+            $(this).html("")
+            $(this).append("<input type=\"checkbox\" class=\"tobeform 2^" + string + "^" + num + " late\" id=\"late^" + string + "^" + num + "\" onchange=\"unCheckAbs('" + string + "^" + num + "')\">");
+            $(this).append("\n<input type=\"checkbox\" class=\"tobeform 1^" + string + "^" + num + " absent\" id=\"absent^" + string + "^" + num + "\" onchange=\"unCheckLate('" + string + "^" + num + "')\">");
+        } else if ($(this.firstElementChild).attr('class').split(' ')[1] == "n-2") {
+            $(this).html("")
+            $(this).append("<input type=\"checkbox\" class=\"tobeform 2^" + string + "^" + num + " late\" id=\"late^" + string + "^" + num + "\" onchange=\"unCheckAbs('" + string + "^" + num + "')\">");
+            $(this).append("\n<input type=\"checkbox\" class=\"tobeform 1^" + string + "^" + num + " absent\" id=\"absent^" + string + "^" + num + "\" onchange=\"unCheckLate('" + string + "^" + num + "')\" checked>");
+        } else if ($(this.firstElementChild).attr('class').split(' ')[1] == "n-3") {
+            $(this).html("")
+            $(this).append("<input type=\"checkbox\" class=\"tobeform 2^" + string + "^" + num + " late\" id=\"late^" + string + "^" + num + "\" onchange=\"unCheckAbs('" + string + "^" + num + "')\" checked>");
+            $(this).append("\n<input type=\"checkbox\" class=\"tobeform 1^" + string + "^" + num + " absent\" id=\"absent^" + string + "^" + num + "\" onchange=\"unCheckLate('" + string + "^" + num + "')\">");
+        }
+    });
+    $('#btns-' + string).html("")
+    $('.afterSelButton').attr('disabled', 'disabled');
+    $('#btns-' + string).append("<button class=\"btn btn-secondary editSaveButton\" onclick=\"afterSelAbs('" + string + "', 'edit')\">Save</button>");
+}
+
+function unCheckLate(string) {
+    document.getElementById('late^' + string).checked = false;
+}
+function unCheckAbs(string) {
+    document.getElementById('absent^' + string).checked = false;
+}
+
+function afterSelAbs(period) {
+    $('#postHomeroomAbs #HR-period').attr('value', period);
+    $('.tobeform').attr('disabled', 'disabled');
+    $('.afterSelButton').attr('disabled', 'disabled');
+    $('.tobeform').each(function (i, obj) {
+        if ($(this).attr('class').split(' ')[1].split('^')[1] == period &&
+            $(this).is(":checked")) {
+            $('#postHomeroomAbs').append('<input type="checkbox" name="' + $(this).attr('class').split(' ')[1].split('^')[0] + '^'
+                + $(this).attr('class').split(' ')[1].split('^')[2]
+                + '" checked="checked">');
+        }
+    });
+    $('#finalCheck').modal('show');
+}
+
+function submitForm() {
+    $('#HR-notes').attr('value', $('#subjectNotes').val());
+    $('#postHomeroomAbs').submit();
+    $('#finalCheck').modal('hide');
+    $('.container').hide();
+    $('#loading').show();
+}
\ No newline at end of file
diff --git a/static/pagejs/homeroom.js b/static/pagejs/homeroom.js
index 3394142..5a8de85 100644
--- a/static/pagejs/homeroom.js
+++ b/static/pagejs/homeroom.js
@@ -57,7 +57,6 @@ function showSignaturePad() {
     resizeCanvas();
 }
 function afterSelAbs(period) {
-    var tobeformArr = [];
     $('#postHomeroomAbs #HR-period').attr('value', period);
     $('.tobeform').attr('disabled', 'disabled');
     $('.afterSelButton').attr('disabled', 'disabled');
diff --git a/static/stud_affairs.png b/static/stud_affairs.png
new file mode 100644
index 0000000..106f40a
Binary files /dev/null and b/static/stud_affairs.png differ
diff --git a/static/stud_affairs.xcf b/static/stud_affairs.xcf
new file mode 100644
index 0000000..402f419
Binary files /dev/null and b/static/stud_affairs.xcf differ
diff --git a/templates/admin.html b/templates/admin.html
index b2b4db8..693ddb8 100644
--- a/templates/admin.html
+++ b/templates/admin.html
@@ -60,14 +60,14 @@
             </div>
         </div>
         <div class="col">
-            <div class="sticky-top" style="background-color: white;">
+            <div class="sticky-top" style="background-color:white;">
                 <div class="row title">
                     <div class="col">班級</div>
                     <div class="col">座號</div>
                     <div class="col">姓名</div>
                     <div class="col">英文姓名</div>
-                    {% for p in periods %}
-                    <div class="col">{{p}}</div>
+                    {% for i in periods %}
+                    <div class="col">{{i}}</div>
                     {% endfor %}
                 </div>
                 <div class="row title">
@@ -76,11 +76,8 @@
                     <div class="col"></div>
                     <div class="col"></div>
                     {% for i in periods %}
-                    <div class="col">{{absData[currDate][i]['name']}}
-                        {% if 'changed' in absData[currDate][i] %}
-                        <span style="color: red;">(換)</span>
-                        {% endif %}
-                    </div>
+                    <div class="col">
+                        {{absData[currDate][i]['name']}}</div>
                     {% endfor %}
                 </div>
                 <div class="row title">
@@ -93,31 +90,30 @@
                     {% endfor %}
                 </div>
             </div>
-            {% if data != None %}
             {% for i in homeroomData %}
             <div class="row">
                 <div class="col">{{homeroomCode[0]}}{{homeroomCode[1]}}</div>
                 <div class="col">{{i}}</div>
-                <div class="col">{{ homeroomData[i]['name'] }} </div>
+                <div class="col">{{ homeroomData[i]['name'] }}</div>
                 <div class="col">{{ homeroomData[i]['eng_name'] }}</div>
                 {% for j in periods %}
-                <div class="col" {% if currPeriod==j %} style="background-color: #ffdf81;" {% endif %}>
+                <div class="col view-{{j}}">
                     {% if 'signature' in absData[currDate][j] %}
                     {% if i in absData[currDate][j] %}
                     {% if absData[currDate][j][i] == 1 %}
-                    <p class="highlightAbs n-2">X</p>
+                    <p class="highlightAbs n-2 view-n-{{i}}">X</p>
                     {% else %}
-                    <p class="highlightAbs n-3">𝜑</p>
+                    <p class="highlightAbs n-3 view-n-{{i}}">𝜑</p>
                     {% endif %}
                     {% else %}
                     {% if absData[currDate][j]['name'] != 'GP' %}
-                    <p class="highlightAbs n-1">V</p>
+                    <p class="highlightAbs n-1 view-n-{{i}}">V</p>
                     {% else %}
                     {% if (homeroomData[i]['GP_Class'][absData[currDate][j]['teacher']] in
-                    absData[currDate][j]['signature'])%}
-                    <p class="highlightAbs n-1">V</p>
+                    absData[currDate][j]['signature'] or 'STUD_AFFAIR_OFFICE' in absData[currDate][j]['signature'])%}
+                    <p class="highlightAbs n-1 view-n-{{i}}">V</p>
                     {% else %}
-                    <p class="highlightAbs n-2"></p>
+                    <p class="highlightAbs n-2 view-n-{{i}}"></p>
                     {% endif %}
                     {% endif %}
                     {% endif %}
@@ -135,7 +131,28 @@
                 {% endfor %}
             </div>
             {% endfor %}
+            {% if showUpload == '1' %}
+            <div class="row">
+                <div class="col"></div>
+                <div class="col"></div>
+                <div class="col"></div>
+                <div class="col"></div>
+                {% for i in periods %}
+                <div id="btns-{{i}}" class="col">
+                    {% if ('signature' in absData[currDate][i] or 'confirm' in absData[currDate][i]) %}
+                    <button class="btn btn-danger afterSelButton" onclick="edit('{{i|string}}')">編輯
+                        <br>{{absData[currDate][i]['name']}}</button>
+                    {% endif %}
+                </div>
+                {% endfor %}
+            </div>
             {% endif %}
+            <form action="/manage/edit_abs" id="postHomeroomAbs" hidden="hidden" method="post">
+                <input type="text" id="HR-date" name="date" value="{{currDate}}">
+                <input type="text" id="HR-period" name="period" value="">
+                <input type="text" id="HR-notes" name="notes" value="">
+                <input type="text" id="HR-homeroom" name="homeroom" value="{{homeroomCode[0]}}^{{homeroomCode[1]}}">
+            </form>
             {% for c in range(periods|length + 1) %}
             {% if c % 4 == 0 %}
             <div class="row signatures">
@@ -153,7 +170,8 @@
                     {% if absData[currDate][periods[c-1]]['name'] == 'GP' %}
                     {% if 'signature' in absData[currDate][periods[c-1]] %}
                     {% for i in absData[currDate][periods[c-1]]['signature'] %}
-                    <div class="row needborder">{{periods[c-1]}}: {{absData[currDate][periods[c-1]]['teacher']}}: {{i}}:
+                    <div class="row needborder">{{periods[c-1]}}:
+                        {{absData[currDate][periods[c-1]]['teacher']}}: {{i}}:
                         {{absData[currDate][periods[c-1]]['names'][i]}}</div>
                     <div class="row"><img src="{{absData[currDate][periods[c-1]]['signature'][i]}}" alt="">
                         {% if loop.index == loop.length %}
@@ -162,7 +180,8 @@
                     </div>
                     {% endfor %}
                     {% else %}
-                    <div class="row needborder">{{periods[c-1]}}: {{absData[currDate][periods[c-1]]['teacher']}}: No
+                    <div class="row needborder">{{periods[c-1]}}:
+                        {{absData[currDate][periods[c-1]]['teacher']}}: No
                         Signature
                     </div>
                     <div class="row"></div>
@@ -171,8 +190,8 @@
                     <div class="row needborder">{{periods[c-1]}}: {{absData[currDate][periods[c-1]]['name']}}:
                         {{absData[currDate][periods[c-1]]['teacher']}}
                     </div>
-                    <div class="row"><img src="{{absData[currDate][periods[c-1]]['signature']}}"
-                            alt=""><br>備註:{{absData[currDate][periods[c-1]]['notes']}}</div>
+                    <div class="row"><img src="{{absData[currDate][periods[c-1]]['signature']}}" alt=""><br>備註:
+                        {{absData[currDate][periods[c-1]]['notes']}}</div>
                     {% endif %}
                     {% endif %}
                 </div>
@@ -181,6 +200,29 @@
             {% endif %}
             {% endfor %}
         </div>
+        <div id="finalCheck" class="modal fade" id="staticBackdrop" data-bs-backdrop="static" data-bs-keyboard="false"
+            tabindex="-1" aria-labelledby="staticBackdropLabel" aria-hidden="true">
+            <div class="modal-dialog modal-xl">
+                <form onsubmit="return false;">
+                    <div class="modal-content">
+                        <div class="modal-body">
+                            <div class="alert alert-danger margin-top" id="allPresentWarning" role="alert">
+                                <h4 class="alert-heading">請確認更改！Please confirm that you are editting records!</h4>
+                            </div>
+                            <h3 class="margin-top">Notes 備註欄</h3>
+                            <input type="textarea" class="form-control" name="notes" id="subjectNotes"
+                                placeholder="Enter Notes 請輸入備註" style="width: 80%; margin-left: 10%;" row="3">
+                        </div>
+                        <div class="modal-footer">
+                            <button type="button" class="btn btn-danger" onclick="location.reload();">Cancel
+                                取消</button>
+                            <button type="submit" class="btn btn-primary submitButton" onclick="submitForm()">Submit
+                                提交</button>
+                        </div>
+                    </div>
+                </form>
+            </div>
+        </div>
         {% if showUpload == '1' %}
         <div class="row margin-top">
             <div class="col">
@@ -204,7 +246,9 @@
         </div>
         {% endif %}
     </div>
-
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"
+        integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p"
+        crossorigin="anonymous"></script>
     <script type="text/javascript" src="/static/jquery.min.js"></script>
     <div id="loading" style="text-align:center; width:100%; display:none;"><img src="/static/loading.gif" alt=""
             style="height:100%;" />
diff --git a/templates/homeroom.html b/templates/homeroom.html
index 398d072..40ba11f 100644
--- a/templates/homeroom.html
+++ b/templates/homeroom.html
@@ -94,7 +94,7 @@
                     <p class="highlightAbs n-1 view-n-{{i}}">V</p>
                     {% else %}
                     {% if (homeroomData[i]['GP_Class'][absData[currDate][j]['teacher']] in
-                    absData[currDate][j]['signature'])%}
+                    absData[currDate][j]['signature'] or 'STUD_AFFAIR_OFFICE' in absData[currDate][j]['signature'])%}
                     <p class="highlightAbs n-1 view-n-{{i}}">V</p>
                     {% else %}
                     <p class="highlightAbs n-2 view-n-{{i}}"></p>
@@ -125,11 +125,9 @@
                 <div class="col"></div>
                 {% for i in periods %}
                 <div id="btns-{{i}}" class="col" {% if currPeriod==i %} style="background-color: #ffdf81;" {% endif %}>
-                    {% if (absData[currDate][i]['name'] == 'GP' or 'confirm' in absData[currDate]) %}
-                    <button class="btn btn-danger afterSelButton" disabled="disabled"></button>
-                    {% elif ('signature' in absData[currDate][i]) %}
-                    <button class="btn btn-danger afterSelButton" onclick="edit('{{i|string}}')">Edit
-                        <br>{{absData[currDate][i]['name']}}</button>
+                    {% if (absData[currDate][i]['name'] == 'GP' or 'confirm' in absData[currDate] or 'signature' in
+                    absData[currDate][i]) %}
+                    <button class="btn btn-primary afterSelButton" disabled="disabled"></button>
                     {% else %}
                     <button class="btn btn-primary afterSelButton"
                         onclick="afterSelAbs('{{i|string}}', 'newSubmit')">Confirm<br>{{absData[currDate][i]['name']}}</button>
@@ -242,28 +240,6 @@
         {% for i in periods %}
         periodData['{{i}}'] = '{{ absData[currDate][i]['name'] }}'
         {% endfor %}
-
-        function edit(string) {
-            $('.view-' + string).each(function (i, obj) {
-                var num = $(this.firstElementChild).attr('class').split(' ')[2].replace('view-n-', '');
-                if ($(this.firstElementChild).attr('class').split(' ')[1] == "n-1") {
-                    $(this).html("")
-                    $(this).append("<input type=\"checkbox\" class=\"tobeform 2^" + string + "^" + num + " late\" id=\"late^" + string + "^" + num + "\" onchange=\"unCheckAbs('" + string + "^" + num + "')\">");
-                    $(this).append("\n<input type=\"checkbox\" class=\"tobeform 1^" + string + "^" + num + " absent\" id=\"absent^" + string + "^" + num + "\" onchange=\"unCheckLate('" + string + "^" + num + "')\">");
-                } else if ($(this.firstElementChild).attr('class').split(' ')[1] == "n-2") {
-                    $(this).html("")
-                    $(this).append("<input type=\"checkbox\" class=\"tobeform 2^" + string + "^" + num + " late\" id=\"late^" + string + "^" + num + "\" onchange=\"unCheckAbs('" + string + "^" + num + "')\">");
-                    $(this).append("\n<input type=\"checkbox\" class=\"tobeform 1^" + string + "^" + num + " absent\" id=\"absent^" + string + "^" + num + "\" onchange=\"unCheckLate('" + string + "^" + num + "')\" checked>");
-                } else {
-                    $(this).html("")
-                    $(this).append("<input type=\"checkbox\" class=\"tobeform 2^" + string + "^" + num + " late\" id=\"late^" + string + "^" + num + "\" onchange=\"unCheckAbs('" + string + "^" + num + "')\" checked>");
-                    $(this).append("\n<input type=\"checkbox\" class=\"tobeform 1^" + string + "^" + num + " absent\" id=\"absent^" + string + "^" + num + "\" onchange=\"unCheckLate('" + string + "^" + num + "')\" checked>");
-                }
-            });
-            $('#btns-' + string).html("")
-            $('.afterSelButton').attr('disabled', 'disabled');
-            $('#btns-' + string).append("<button class=\"btn btn-secondary editSaveButton\" onclick=\"afterSelAbs('" + string + "', 'edit')\">Save</button>");
-        }
     </script>
     <script src="/static/pagejs/homeroom.js"></script>
     <script src="/static/time.js"></script>