I have a Sanibel 3601 and it should be similar to yours. In the bedroom in the ceiling above the TV there are two coax connections wall type plates. The one on the left when you are looking at the TV is for the cable the one on the right is for the Sat, the bedroom TV is probably connected to the left one, you will need to move to the right (Sat connection). The cabling is a direct run to the UDC for both the bedroom and living room.
I use direct TV and each TV needs a box if you want to watch different channels. I place the SWIM power unit and the spliter in the UDC. Then a box by each TV and this works great.
If you only have one box the living room TV can watch sat and the bedroom can not. But the bedroom can watch over the air TV at the same time. The booster in the living room must be on (green light). If you are only getting one channel in the bedroom ensure the booster is on, the bedroom coax connector is connected to the cable left connection and run the auto scan function on the TV and you should be able to watch over the air TV in the bedroom at the same time. Hope this helps.