I know a few people were asking about this. I would hire a developer to do this for me, but if someone made a plugin available to all, I think a lot of people would be interested in buying it. I want to either create main groups for my groups and allow members to create subgroups under the main ones only OR to have categories with subcategories and allow them to pick a category for their group. So it would be just like the Forum dropdown menu.

Any developers interested in this?