I want a sound mute button

I wear headphones all day, and end up in zoom meetings on a separate screen that are ongoing for war room-like calls, these calls usually go on for 8 hours plus.

I want a sound/speaker mute button in zoom so that my headphones can switch to normal audio mode so that i can play music in a non- mono format which tends to happen as long as i am in the call, even though i have very involvement in the zoom call ?