On the
Summary of Security Realms page select the name of the realm (for
example, myrealm).
On the
Settings for Realm Name page select
Users and Groups > Groups.
In the
Groups table select the check box next to each group you want to
delete.
If you have a large number of groups, use the
Customize this table link to retrieve and
list only the groups that match your search criteria. The
Filter By field uses the asterisk (*) as the
wild card character.