Invision Community Forum Help

I have a question about user group management. What I would like to do is: - I create a user group. - I designate a member the "moderator" or "head" of that group. - Other members may apply for membership of that user group. - The Moderator/Head of the group can approve or deny those requests. Is that possible out of the box? And if not, is there a mod that does this? What I want to do is semi-recreate the social groups discussions that vBulletin has. Only I would be doing this with user groups and actual forums. I am aware that there is a plugin for IPB 2.3 that does this (sort of), but it has not been updated to 3.0 yet and I would be willing to …