Preview Audio before show starts?

I may just be missing a setting here but is there a way to preview the audio for your show before it starts?

In weeks past, when I click START SHOW I hear the audio start. Today I clicked START SHOW and there was no audio and I couldn’t quite figure out how to fix it because I had to focus on the show.

Is there a way to preview the show audio before going live?

I have attached a picture of the settings below. Audio Mix 1 is all my layers except my microphone layer so there is no echo.

Thanks.

Click on the green Volume Square and it will enable Monitor mode before you start show!