I am unable to move everything to the same room

From the product guide:

Set up surrounds

It’s easy to turn two Sonos speakers (same model), or a Sonos Amp and your favorite non-Sonos speakers, into separate right and left channels for your home theater. 

1. Place each surround speaker about 10 ft from your favorite listening position, angling them toward the seating area.
2. Go to  > System.
3. Select a room with a soundbar and choose Add Surrounds to get started.

Note: If you group the rooms or create a stereo pair instead, you won't have surround sound.

Learn more

Thanks buzz and nik9669a. That was quick. I did as you suggested and voila: surrouds in the room with the Beam/Sub.

Thanks again. 

This was much easier when houses had rooms and Sonos had Zones.

Edited to the old names just to aggravate the Sonos marketing folks:

Only identical speakers can be “Bonded” as a stereo pair. This pair will become a “Zone”. If you unBond the stereo pair, these speakers can be added to the soundbar as surrounds. All three speakers will become a single Zone. If you also add a SUB to this surround Zone, it will become part of the surround Zone too. The result will be soundbar, surrounds, and SUB becoming a single Zone.

What confused me, when I unpaired the two 1's, it left 1 of the two in that 'room'. Only one of the pair became "free’ to do something with, I thought. So I did not expect both would come along when adding the surround to the Beam/Sub 'room'.