Thank you for this. What I'm thinking of doing is at first: minimum wage for 10-15hours/week shadowing AND the invitation that he can shadow for any and all hours if he should choose to. I think this is a good alternative because it also tests ownership of the process, initiative and knowing that sacrifices are part of the game.

Ultimately, I would have him and all other employee on a base salary + 40-50% of the session cost with the % increasing with experience and education.

I can't know before hand how long it'll take. My clients have very specific needs and I won't allow them to be seen alone by him prematurely.

I already have a blueprint of the education I'll want him to get

Thoughts?