Touch the Tools button on the main button bar.
Select System Configuration from the drop-down menu.
Touch the Group button at the top of the System Configuration window. The System Configuration window displays the grouping fields and buttons.
The top field is the Group List. It drops down to show the created groups and the default All group.
Select the group that you want to remove.
Touch the Delete Group button to remove the selected group. A dialog box appears, asking you to confirm the operation.
Touch the OK button to confirm. The group is removed from the list.