I have been out of playing with my own AV stuff for many years but there is a company Xantech that has the hardware to make this setup work for you. If I remember correctly you have an IR receiver and it has emitters. Each emitter can be programmed for a different TV of the same brand and model. They worked great. I had a friend who was in the AV business and he showed me all of his tricks.

If you really want a nice setup, you can take the covers off of your equipment and find the internal IR receiver. Wire tie the emitter in front inside the unit and run the lead out the back of the equipment. It looks professional as you don't see the unsightly two way stuck tape emitter on the front of the equipment. I did all mine that way. I see professional setups like that and it drives me crazy.