**air conditioning** how to vent ?

I have a potable a/c and am wondering how to vent it !! I can keep the unit on the outside of the room taking in air from the garage and I can duct an intake into the tent!! and the exhaust would run all the way outside? If i did that the a./c unit would not be able to run on automatic and always be on !! OR should i cut a hole in the tent and let the unit stick half in half out!!! It would know the temp of the room and be taking in the air from the tent? whats best?​