Hello - I am trying to control a group volume from one amp. My setup is below:

I have 4x Sonance 8” ceiling speakers wired in to an Amp (Amp A) in a media rack upstairs. I have this Amp, the ceiling speakers and Sonos Sub 4 in a room called “Kitchen”.

I have a Sonos Move in a room called “Portable”.

I have Pro-Ject Turnrable connected to a second Amp (Amp B) in a room called “Media Wall”.

I have these three rooms grouped into a group called “Home”.

Everything is working well and volume control as a group works well from the app.

I would like to be able to control the volume of the group “Home” with the touch controls on Amp B. Is this possible? 
 

Thanks!