It's not a hard concept, but maybe I'm wrong. After all it's not nice to assume these days.
It was however, spelled out right in front of you.
With at least five printed signs,
posted in an area no bigger than two square feet
at all different height levels.
you even had to
MOVE A SIGN OFF THE BOTTLE TO USE IT
maybe the system that was enacted failed you
maybe we didn't do enough to
explain what it was about.
The Oxygen Bottles..........Do Not Use
Questions feel free to ask, I'd be happy to explain it to you some more.