In UP's world, everybody is qualified for everything, even if they don't know what they're doing.

The big reason for the so far stalled manned helper start up is opposition from the HDC. The corridor managers and dispatchers are going ballistic over the manned helpers because they claim it creates too much additional work: calling crews and rides if needed plus dispatching those pesky light engine moves back down the hill. When they did try to run them as a "test", the dispatchers did a wonderful job of sabotaging the helpers so they wouldn't work.