[Plugin: Buddypress] Groups to join group category?

Hello,

Is it possible to allow users that creates a groups to join it into a main category of groups on there own?

For example:

James creates a group called: NAME

There are 3 Categorys of groups: category1, category2, category3. James wishes to join category1 and category3, so he simply either goes onto his group then clicks join category > category1 or goes onto the category and clicks join group > NAME.

Something along these lines would be great.

Many thanks,
Elliot Sowersby.