Using the Group Properties Dialog To Manage Group Members and Owners, or Group Membership in User Lists

Select the Groups node.
Right-click a group and select Properties.
The Group Properties dialog opens.
To manage group members, select the Members tab.

To add members, click Add, then select one or more users in the Select Users dialog and click OK. These users are added to the Members tab.

or
To remove members, select one or more users on the Members tab and click Remove.
To manage group owners, select the Owners tab.

To add owners to this group, click Add, then select one or more users and/or user lists in the Select Users or User Lists dialog and click OK. These users and/or user lists are added to the Owners tab.

or
To remove owners from this group, select one or more users and/or user lists on the Owners tab and click Remove.

Note: Make sure that each user you want to make an owner of this group has the user setting, Administrative - Enable group and user list ownership, turned on. Whenever a user list is an owner of a group, only the members of the user list who have the above user setting turned on will actually be owners of the group.
To manage this group's membership in user lists, select the Member Of tab.

To add this group to a user list, click Add, then select one or more user lists in the Select User Lists dialog and click OK. These user lists are added to the Member Of tab.

or
To remove this group from a user list, select one or more user lists on the Member Of tab and click Remove.
When finished making changes, click OK on the Group Properties dialog.