If you are struggling with the job as a sim instructor, Normasars, as I think you might be considering your post, I would suggest you step down!
Running the operation from the "back seat" is pretty simple really and if you need to impress us with the stress you are under, and tell us how hard it is, then I suggest you are out of your depth!
An experienced airline pilot / sim instructor should have no trouble at all running a sim session, completing all exercises in the allotted time and complying with company SOP's.