def METHOD_NAME(self, request, form, formset, change):
    """
    Associate the user to each instance saved.
    """
    instances = formset.save(commit=False)
    for instance in instances:
        instance.content_type = ContentType.objects.get_for_model(instance.study_group)
        instance.object_id = instance.study_group.pk
        instance.creator = request.user
        instance.owner = request.user
        instance.save(log=False)