As a group creator or group admin, you can promote and suspend members who have joined. You can suspend members from your group by clicking the “Manage Group Members” link in the Options drop-down menu on your group’s home page. Locate the member you’d like to suspend from your group, check the box next to his or her name, and click the “Suspend from Group” button.
You can also promote group members to administrators to help you manage the group. To promote a member to administrator status, locate the group member you’d like to promote to administrator status and check the box next to their name. Click the button to “Promote to administrator” and you’re all set!