> I can't find an HP variable which holds the name of the jobq
> that a job is in. I would expect a name like HPJOBQ to be appropriate.

That would be a good name, but for now there is no such variable. Don't
create your own with that exact name either! :).

You can do this:
  setvar myjobQ JINFO('0','jobq')     # zero mean "me"

> I also want to set the JOBPRI for specific queues but the JOBPRI
> command does not support the ;JOBQ= syntax of other job commands
> like SHOWJOB and ALTJOB.

By design, job queues only support two properties: name, fence.  This
may be extended over time, but that's all for now.  A reason for this
was to not compete with existing 3rd party solutions in this area.

regards,
 Jeff Vance, CSY