Ah-ha! I've practiced this twice in scrimmages but it was finally my turn to be a Penalty Box Manager at a bout...and I was bricking it!
The bout was the Heartlands South East Opener and my team were playing. When we arrived at the venue, my head went blank. I kept trying to remember my scenarios and just ended up getting myself confused. A fellow NSO tested me on them, and I nailed it, but I was still panicking.
I even had the situatiuon where I had to hold both jammers for 10 seconds and no one actually shouted at me to let one go! Woohoo!
By the time it got to the second bout, I was a lot calmer. I did bumble ocassionally (I called a jammer the wrong colour at one point) but I did it, without any major issues, without having to use my prompt cards, my fellow penalty box timers were awesome, the skaters well behaved, and I think I did pretty well!