m[ember] [group_name | organization_name [-a member_list]
          [-r member_list] ]

 Edits the membership list for a group or organization.

 If you do not specify a group or organization, the member subcommand
 prompts you for names to add or remove.

 To add names or aliases to a membership list, use the -a option
 followed by the names separated by commas. To delete names from a
 membership list, use the -r option followed by the names separated
 by commas.  If you do not include either the -a or -r option on the
 command line, rgy_edit prompts you for names to add or remove.

 Removing names from the membership list for a group or organization
 has the side effect of deleting the login account for removed member
 (and, of course, eliminating any permissions granted as a result of
 the membership the next time the member's ticket-granting ticket is
 renewed).