Purpose
Use the DEFGROUP command to define a group of members to which rules, schedules, and monitors can apply. This command adds members to a group.
After a group is defined, several commands and operands can refer to the group by its group name. This includes the GROUP, EXGROUP, SYSGRP, and EXSYSGRP operands, some of which are available on the DEFEMON, DEFIMON, DEFMMON, DEFPMON, DEFRULE, DEFSCHD, and DEFSMON commands. Depending on how the group is used on these commands, it can refer to groups of users or groups of system names.