How is this procedure done? I can't find instructions anywhere and I don't like fiddling with expensive parts when I don't know the proper procedure.

All I know about this procedure is to:

1) Check level
2) Add supercharger oil as necessary.

So simple, yet where’s the dip stick or plug? How do I check the level?

look at the snout of the SC. look near the intake manifold, and find a small black plug with an opening for a torx socket. thats your plug. Remove it, and the oil level should be up to the bottommost threads in the snout.

Let me know if I wasnt exact enough for you, I'd be happy to elaborate.

Thank you, very much! I knew it had too be simple.