The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

24.7 Modifying or Deleting Groups

To modify a group, use the groupmod command:

# groupmod [options] username

To delete a user's account, use the groupdel command:

# groupdel username

For more information, see the groupdel(8) and groupmod(8) manual pages.