diff --git a/ietf/static/js/edit-meeting-schedule.js b/ietf/static/js/edit-meeting-schedule.js
index 3f0afe0841..2a73a8c29d 100644
--- a/ietf/static/js/edit-meeting-schedule.js
+++ b/ietf/static/js/edit-meeting-schedule.js
@@ -50,6 +50,7 @@ $(function () {
     let sessionPurposeInputs = schedEditor.find('.session-purpose-toggles input');
     let timeSlotGroupInputs = schedEditor.find("#timeslot-group-toggles-modal .modal-body .individual-timeslots input");
     let sessionParentInputs = schedEditor.find(".session-parent-toggles input");
+    let sessionParentToggleAll = schedEditor.find(".session-parent-toggles .session-parent-toggle-all")
     const classes_to_hide = '.hidden-timeslot-group,.hidden-timeslot-type';
 
     // hack to work around lack of position sticky support in old browsers, see https://caniuse.com/#feat=css-sticky
@@ -769,6 +770,17 @@ $(function () {
     sessionParentInputs.on("click", updateSessionParentToggling);
     updateSessionParentToggling();
 
+    // Toggle _all_ session parents
+    function toggleAllSessionParents() {
+        if (sessionParentInputs.filter(":checked").length < sessionParentInputs.length) {
+            sessionParentInputs.prop("checked", true);
+        } else {
+            sessionParentInputs.prop("checked", false);
+        }
+        updateSessionParentToggling();
+    }
+    sessionParentToggleAll.on("click", toggleAllSessionParents);
+
     // Toggling timeslot types
     function updateTimeSlotTypeToggling() {
         const checkedTypes = jQuery.map(timeSlotTypeInputs.filter(":checked"), elt => elt.value);
@@ -1020,4 +1032,4 @@ $(function () {
         .on("mouseleave", ".other-session", function () {
             sessions.filter("#session" + this.dataset.othersessionid).removeClass("highlight");
         });
-});
\ No newline at end of file
+});
diff --git a/ietf/templates/meeting/edit_meeting_schedule.html b/ietf/templates/meeting/edit_meeting_schedule.html
index 462f97715d..a975c2e61a 100644
--- a/ietf/templates/meeting/edit_meeting_schedule.html
+++ b/ietf/templates/meeting/edit_meeting_schedule.html
@@ -223,6 +223,11 @@ <h1>
                                     {{ p.acronym }}
                                 </label>
                             {% endfor %}
+                            <button type="button"
+                                    class="btn btn-outline-primary btn-sm session-parent-toggle-all">
+                                Toggle All
+                            </button>
+                                    
                         </div>
                         <div class="my-3">
                         {% if session_purposes|length > 1 %}