This is just a question:
Am i able to un-promote someone? I don't want to i am just curious.
Thanks to all!

Yes, there is a way. Just remove them from your studio and add them back in as a contributor. That should do the trick!

Answering,

ErnieParke

Nope, the only way to do that is by removing them from the studio and re-inviting them.

Wow guys! that was really fast! Thanks