Allow organizers to modify answers to check-in questions

src/pretix/control/views/orders.py

@@ -639,6 +639,7 @@ class OrderChange(OrderView):
 class OrderModifyInformation(OrderQuestionsViewMixin, OrderView):
     permission = 'can_change_orders'
     template_name = 'pretixcontrol/order/change_questions.html'
+    only_user_visible = False
 
     def post(self, request, *args, **kwargs):
         failed = not self.save() or not self.invoice_form.is_valid()