"I'm required to ask," he said as he wrote down why, figuring that somepony on a higher pay grade could work out what Pinkie actually meant.  He knew most of this would be worked out in the training process anyway. All that was required of him was to make sure a pony wasn't joining simply so they could hurt or kill other ponies. Even with that small caveat, he was told to be pretty flexible because they needed the recruits.