[FS/SCM 9.2][8.58] Relating Server Definitions to Domain and Master Scheduler

(1) What's the relationship between creating a process scheduler domain via psadmin and setting up a new (Process Scheduler) Server Definition in the PIA

It seems like there's a 1:1 relationship, right? In the psprcscfg file, you have a PrcsServerName, and that name corresponds to a single (Process Scheduler) Server Definition in the PI

(2) When setting up a simple master scheduler situation (1 master scheduler and one thing that runs the processes) (in order to get the other benefits of the scheduler beyond load balancing)

(a) do you need to setup a second process scheduler domain and sever to "run" the jobs?

(b) can the domain the master scheduler is running ALSO run jobs?