Click the Admin tab.
Click the User Accounts tab.
Select Group Lists item in the table menu.
Click the Delete Button, 
, for the group account you want to delete.
Click the Admin tab.
Click the User Accounts tab.
Select Group Lists item in the table menu.
Click the Delete Button, , for the group account you want to delete.
From the Groups page, click the Delete Button, , to the left of the group ID. A message appears asking you to confirm your selection. Click the Cancel button to abort the operation.
Administrator rights are required to delete groups.