After you add a constituent group type, you can delete it as necessary, such as when your organization no longer uses it. You cannot delete a group type when it is assigned to a constituent group.
Tip: To retain a history of the constituent group type in your database but still prevent its use, mark the group type as inactive rather than delete the record. For information about how to mark a constituent group type as inactive, see Mark Constituent Group Types as Inactive or Active.