We've had the Harmony Hub for a while (I guess it's called the Companion now), originally set up with a Watch Apple TV activity, which includes the Apple TV, a Yamaha receiver, and a BenQ projector, all playing together just fine.

Recently we got a Sony Blu-Ray player, and figured I'd just add it to the activity. I've added the player as a device, and can control it directly via the harmony app, but when I try to add it to the existing activity, it doesn't show up in the list of available devices.

What's the best way to do this? Do I need to add a separate activity, and if so, does switching activities ensure that it won't turn off the receiver and projector. To my mind, watching TV is one activity with multiple source devices.

My goal is to be able to use the physical remote, since I can use it by feel without additional light.