1. You could register your community through the 'Register a Community' page:
It is located at groups => Register a Community.
It's fine though I did that for you ^^
You didn't mentioned the acronym, So I guessed it will be SR
2. You have the admin rights of SR community. On your user panel under the groups category, SR community is added, Which lets you edit this community.
3. Once you visit the edit page of SR, You may want to read
THIS. This will help you more on how to edit it.
I didn't put the people you mentioned in this community, So that you learn to invite them yourself.
4. A board on TUS forums is assigned to SR and you are the moderator of it:
https://www.tus-wa.com/forums/sr/But this does not mean you only can have this board. You can create as many boards as you need yourself by your edit page (Without asking me)
Cheers