I took a look at the data for this RV on the Coachmen web-site. From what I can see, this RV does not have separate Satellite input(s), but only a "Cable" input. That means that this one input has to be "re-purposed" for use with Satellite. Fortunately it looks like the "Main TV" (where the antenna booster control and cable inputs come together) is in the main living area (where you'd want it). I also note that this unit has a TV in the outside kitchen/entertainment area, as well as one (I think) in the bunk house.
I created this drawing to indicate what is there and what needs to be changed.
The lines in red (and the red "X"'s) indicate what needs to be cut/changed to connect in the satellite receiver, and to take output from that receiver to the other TV outlets (options 1 or 2b). I normally suggest that "AB" switches be used to allow selection of how the system is supposed to function, but since this is a "semi-permanent" campsite, I doubt the "cable" connection will ever be used as such. (If off-the-air TV is wanted at the second two TV's, an AB switch at the output of the booster control would be in order.)