In my case, their was a panel where all the coax came together to a series of splitters and combiners.. I bought a tester from home depot. It had four colored end caps that you would screw onto a coax outlet. The tester would light up an led corresponding to the color that was on the other end of the coax. Through trial and error I was able to map every coax wire in the house. The two places I wanted satellite I removed from the rest of the system and just connected the sat in wire directly to where the appropriate coax. Then connected the first moca adapter to my router by Ethernet and to a non isolated coax. Now connecting another moca adapter to any coax outlet that has not been isolated yields Internet In that room. The first step is mapping and understanding how the coax is distributed in your house.