My TV is connected to my PC, so if there’s any sound on my PC, it ungroups and switches to the PC sound. I’d like to deselect the options to:

TV Autoplay & Ungroup on Autoplay

If I undo these options, how can I manually tell my Sonos TV speakers to reconnect to the sound that my TV/PC is giving off when I’m ready to play music from the TV/PC again? I’d like to switch manually, but I don’t see the option.