How do I mute my server's speaker?

I can’t seem to figure out how to make my laptop’s (server) speaker be muted when I relay its audio to my PC. Is this an intentional design? I’m going to guess that I’m missing something.

Devices:
PC’s MB is Asus A320m-K AMD CPU Windows 11
Lenovo Thinkpad 14 Gen 1 AMD Windows 11
AudioRelay 0.27.5 on both devices