I hadn’t actually read the notes, but at about 18:30 on the video he says
If I’m doing a workshop and someone gets up to play, the first thing I do is volume on 10, tone on 10… just make sure that that’s a kind of good default setting … you definitely should learn to experiment with all of those things, but as a general setting that’s probably where you want to start…
I think that is what stuck in my head. But he also talks about reducing volume to clean up the sound, so obviously it is something that needs to be tweaked to suit.