The scheduling priority of a process is the priority assigned by the process scheduler, according to scheduling policies. The dispadmin command lists the default scheduling policies. For more information, see the dispadmin(1M) man page.
You can use the priocntl command to assign processes to a priority class and to manage process priorities. For instructions on using the priocntl command to manage processes, see How to Designate a Process Priority (priocntl).