Sorry, I probably should have been more clear, I was referring to teaching someone only the skills necessary to operate a ventilator, in a supporting role to a properly trained medical professional, who would handle the more complex situations.

I'm willing to consider that it isn't possible, but if that is the case, I'd be keen to know the particulars of why. If there happened to be a documentary on respirators that covered some of the complexity involved, I would be on my couch watching it.