WordPress.org

Where is the settings page?

Settings -> BP Group Control

How do I make a group show up next to my name on the directory and on my home page?

Go to the group homepage, or My Groups, and click "make identifying." You have to be a member of the group to do this.

How do I add users directly to a group?

Go to the group/manage members tab. To add a new user, click "add." To add an existing user, click "add existing." You can get to these screens when you are creating a new group as well.

How do I change the email message that gets sent when I add some one?

This functionality isn't really available, however, you can change the language of the message directly in the plugin at line 477 of bpgc-core.php. Remember that if you do this and then upgrade to the next version of bp-group-control (which will let you create your own template), it will erase your changes.