[r-a-y]

Hey TR123,

Short answer: Right now, you can’t.

There are a couple of requests in the Trac for group categories:

https://trac.buddypress.org/ticket/946

https://trac.buddypress.org/ticket/1068

I don’t anticipate this coming in 2009; I’m guessing something like this will come in the New Year.

Hope that helps!