Harmony Companion : controling multiple devices at the same time
I bough a Harmony Companion and its hub second hand.
I successfully configured it for my main room's equiment : an amplifier, an Apple TV and a STB.
Everything is supported and recognized: with the iOS app, I can control the 3 devices.
I created some "activities" : one to watch movies (amp + Apple TV) and one the watch TV (amp + STB).
I can start/stop them with my remote : the correct equipent turns on/off according to the acivity. Yey!
My issue is when I am "into" an activity: whatever the key I press, it is sent to the amplifier.That's cool for the volume controls, but not for the arrows, numbers, "menu", "guide" etc.
I would obviously like to control the Apple TV/STB in that case.
Do I have to configure something for that ? A kind of priority ? I've checked the manual and google without any success, I guess I am missing something.
Thanks for any help.