A person with the role of Admin works with people and teams.
Be aware that the peer group might be used in a permission scheme.
On the home page, click the Members button for the team.
The Members dialog box appears.
In the Members dialog box, click the Peer Groups tab.
Click the name of peer group that you want to delete.
The Edit Peer Group dialog box appears.
In the Edit Peer Group dialog box, click Remove.
In the Confirmation box, click Yes.
Click X to close the Members dialog box.