For more information, see Using Your Assigned Administrative Rights in Securing Users and Processes in Oracle Solaris 11.4.
$ prctl -n project.cpu-shares -i project group.staff
project: 2: group.staff
NAME    PRIVILEGE       VALUE    FLAG   ACTION     RECIPIENT
project.cpu-shares
        usage               1
        privileged          1       -   none               -
        system          65.5K     max   none $ prctl -n project.cpu-shares -v 10 -r -i project group.staff
$ prctl -n project.cpu-shares -i project group.staff
project: 2: group.staff
NAME    PRIVILEGE       VALUE    FLAG   ACTION     RECIPIENT
project.cpu-shares
        usage               1    
        privileged          1       -   none                                 -
        system          65.5K     max   none