To add or remove members from a group:
Notes:
You can't add outside users to a group. Outside users' names appear in purple text, and they have icons (
) after their names. For more information on outside users, see Outside Users.
Some system configurations prevent you from removing yourself from a group. For example, you can't remove yourself from a group that is synced up with a group in your LDAP directory.
If you remove yourself from a group, you also remove yourself from every item the group is a member of. After you remove yourself from an item, you can't add yourself back in. You must ask another member to do that for you.