Are you asking if it's possible to add a group to the list of reviewers of a pull request? If so, then unfortunately that's not possible yet in Bitbucket Server, but we have an existing feature request for this that you might want to add yourself as a watcher to and vote for:
Premier Support Engineer
Hello! My name is Mark Askew and I am a Premier Support Engineer for products Bitbucket Server/Data Center, Fisheye & Crucible. Today, I want to bring the discussion that Jennifer, Matt, and ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs