doorhanger printer reserved

So we had this problem at work, we have one printer. but some people kept printing. if you had any priority prints, you needed to wait until the other was done. this door hanger we use to reserve the printer for the next print. the doorhanger has two sides, a high prio(rity) side to show that you need to be te first, and just a low prio side. the dual side print needs a ams, but the prio side can be printed with a single filament change