The GROUP command is used to manipulate the popstore management
    groups. Only managers with either operating system privileges or
    a privileged popstore account with access to the WORLD group can
    use this command. In regards to the latter case, that means that
    the manager's account must have the MANAGE usage flag set and
    either have no group name associated with the account-the empty
    group-or be in a management group which contains as a subgroup
    the WORLD group. The one exception to this rule is that a manager
    can always use the /LIST qualifier to list their own management
    group and subgroups thereof.