New Omniauth Users added to select group

I’ve successfully installed gitlab CE using bitbucket omniauth, users are also able to import bitbucket repos. My question is whether it’s possible to have newly created omniauth users into a particular gitlab group.

For example, I have a set of repos attached to a namespace, I want the new omniauth user (restricted by domain) access to the repos. Is there any way to do this automatically versus manually doing this for each user.

Version: Gitlab CE