Any trigger to temporarily mute game sound

When I have voices over-top of a large battle scene (not in cinematic mode), sometimes I want to mute game sound effects. Or just lower them. Any way I can do that?

...have you even looked at the "Sound" Category in the actions?

Yes, have you? I don't think you understand the question.

If you're talking about "Set Sound Volume" that will lower the voice, as well.

Ah nvm found the problem. Thanks for... the help?