I have a Sonos soundbar on my Panasonic smart tv plus a pair of 1speakers(I think!) in the same room and a pair in a second room.

I want to add a soundbar plus speakers to a second tv in a different room. Can I do this via my existing system or does it have to be separate?
Apologies for the rather dumb question but I’m totally clueless about anything tech.

Regards and thanks in advance