Mult-Room Audio

I have a Denon 4308 running 3 zone audio though out the house.
The main zone is my home theater, and I set it up as such.
Is it best to setup zones 2 and 3 as rooms, or devices, or ?
The zones feed external amps and wall mounted analog volume knobs.

Each zone should be a separate room. Add the same device to each room, but select the appropriate Zone when adding the device each time.

That’s what i figured.
Thank you.