The MU has an attribute called RemainingProcTime. Each time you call it, it returns your desired result. I suppose you want to use it to schedule some other related actions, like dispatching a Transporter.
Suppose I would want to schedule the dispatching of a transporter based on when Processing time is complete. What attributes or method calls would you utilize?
I am thinking that you would use an Observable value like Occupied to determine when a part is ready to be picked up by a transporter. I am unsure how to utilize Occupied in order to call a transporter accurately though.