We are taking our new to us pop up out for the first time this weekend. And I have been reading about setting up and take down at the campground. One piece that is confusing me are the jacks/stabilizers on each corner of the trailer. When do I put those down and up? based off what I have read it seems when I get to campsite, and am still hooked up to vehicle level trailer side to side. un hitch, level front to back, and then raise roof. Is this when I want to do the jacks/stabilizers before I pull the beds out?