I have the following relationship
Class A <--- many_many ---> Member
and it is moderated using the ModelAdmin interface. Now when I create a new Class A object, I wish to select from the new tab 'Member' -> 'Add new Member' an existing Member from a dropdown or similar fashion. However, it shows the form to create a new member. How can I modify this behavior? I suggest I need to change getCMSFields_forPopup() function somewhere?
Any help is highly appreceated.