Added setting to disable order cancelling for users

src/pretix/control/forms/event.py

@@ -160,6 +160,11 @@ class EventSettingsForm(SettingsForm):
         required=False,
         help_text=_("Public email address for contacting the organizer")
     )
+    cancel_allow_user = forms.BooleanField(
+        label=_("Allow user to cancel unpaid orders"),
+        help_text=_("If unchecked, users cannot cancel orders by themselves"),
+        required=False
+    )
 
     def clean(self):
         data = super().clean()

src/pretix/control/templates/pretixcontrol/event/settings.html

@@ -39,6 +39,7 @@
             {% bootstrap_field sform.max_items_per_order layout="horizontal" %}
             {% bootstrap_field sform.attendee_names_asked layout="horizontal" %}
             {% bootstrap_field sform.attendee_names_required layout="horizontal" %}
+            {% bootstrap_field sform.cancel_allow_user layout="horizontal" %}
         </fieldset>
         <div class="form-group submit-group">
             <button type="submit" class="btn btn-primary btn-save">