fridge question

Hey everyone.  I don't own a trailmanor, but I love RVs and had a question.  Where do you change the power supply for the fridge from 12V to propane, etc.  I'm just wondering because when travelling (with my parents pop-up), if we were to stop somewhere for an hour I would switch the fridge from 12v to propane so as not to wear down the battery.  With the trailmanor, do you have to set it up in order to do this?  

FYI..... I've loved campers since I was little.  Even now with two little kids, I still go to whatever RV shows are around my area just for fun and to learn.  I am not even close to being able to buy anything in the near future, but hope to some day.  I've taken a liking to Trailmanors and have taken my parents (2 different times) to the nearest Trailmanor dealer just to show them (and peak their interest as well).  This Sunday I am going to an RV show to show my wife the Trailmanor (she hasn't seen one yet, only the brochures).  I must give a plug for the dealer in Victor, NY.  They are Walker's Four Seasons and they were EXTREMELY nice and spent over 40 minutes showing us the Trailmanor and talking with us, even though I said up front that we were not in the market for one right now.  The salesmen are not on commission so there's less pressure on them which makes for a very enjoyable visit (I wish our local car dealership was that way) .  

Anyway, I just put all that up there since this is my first post.  Thanks!
David