🚀 go-pugleaf

Is it possible for a user program to easily and reliably schedule tasks
already in the various system lists??  I ask this because I'm about to 
attempt implementing "Monitors" (kindof a structured Semaphore) to use
with the Exec.  I could use semaphores to do this, but that's not real
clean.  Basically, I would need to block a process (or task) and put it
in one of my own condition queues.  Then, at some later time, I'd have 
to re-schedule the task into one of the Exec queues (obviously the Ready
queue).  Can this be done reliably and easily??

Thanks in advance...