I see this is added in 11.25. I'm assuming it's so you can set the tactix 7 as your main wearable device but where is this done? Don't see it anywhere on either the watch or GC. Also, let's say I use my edge 1040 during bike rides but my tactix during runs. Which is the primary training device? I'd love if Garmin gave some guidance on this new feature...
The Physio TrueUp Support Center article is now updated to reflect the v11.25 software update changes:
Don't see it anywhere on either the watch or GC
This is all I know with the beta 11.xx in which it was introduced. In fact, i think is more related to the GC update and not to Fenix7…
Me too, I'm unsure how much information is transferred between watches as well.
Where are you looking? On GCM the option appears under Settings on the iPhone not under the specific device (different on Android perhaps?). And on GC Interweb the little cog when you select your device gives you the option to Manage Device Priority
Sorry, I was getting a bit frustrated as I’m not tech savvy
I will retreat back to my lower status 
still don’t know how to get the best out of my two devices, looks like I’m gonna have to upgrade my watch
