Multiple Groups in Profile Type?

Hi SI Team

This is probably really simple and just me being too complicated but here it goes...
I have had an online user group for a number of years now.
People registered here:
http://finalbug.net/my-profile-here
And got put into the profile type: final BUG Network

These days I have created 2 new groups.
(Testing a third.)
The two new groups are called:

Learn Resolve
Learn FCP X

Are these sub groups of profile type: final BUG Network?

Or in other words when I join them do I get put into final BUG Network as well?

thanks

Paul