fix a few missing things

atlas/forms.py

@@ -57,7 +57,7 @@ from autocomplete import widgets as htmx_widgets
 
 import logging
 
-from generic.forms import ExamAuthorFormMixin
+from generic.forms import ExamAuthorFormMixin, ExamGroupsFormMixin
 
 from crispy_forms.helper import FormHelper
 
@@ -749,6 +749,9 @@ class SeriesAuthorForm(ExamAuthorFormMixin):
     class Meta(ExamAuthorFormMixin.Meta):
         model = Series
 
+class ExamGroupsForm(ExamGroupsFormMixin):
+    class Meta(ExamGroupsFormMixin.Meta):
+        model = CaseCollection
 
 class AnswerJSONForm(Form):