Changing group membership
To remove a contact from a group:
  1. Go to the group from which you want to remove the contact.
  2. From the Group menu, choose Group Membership. The Group Membership dialog box appears.
  3. From the list of contacts on the right side of the dialog box, tap the contact to select it.
  4. To remove the contact from the group, tap Remove. The selected contact is removed from the list of contacts on the right side of the dialog box.
  5. Tap OK to save your changes.