This one is a bit ridiculous to admit. Until yesterday, I never knew that you can access "on stage" or "audience" from the media screen. This discovery was made by me trying to push the "Home" button in the upper left corner, and having that not happen, yet hearing the "beep" - I was fumbling the push and hitting the app below the home button, which I had always taken for just some "QLS" logo related to the system. I hadn't noticed the cycling, teensy red dot beside the tiny grey letters indicating "reference", "audience" and "on stage" until I had pushed that spot a bunch of times, trying to figure out why the screen was beeping at me and not going to the split home screen.
With the post immediately above, that is two discoveries from fumbling. Heh!