New to Adobe Collaboration - help

We have recently been tasked with setting up our file system within adobe creative cloud using collaboration. This is a multi-part question as I have never worked within a collaborative file share system like this. I am understanding that we are enterprise and each user has 100 gig of CC space.

1.   How does the creative cloude file hosting work? Should acreative cloud file system be set up under one admin account? Whats the best practice for this?

2. If Joe shares files with Suzie and then Joe leaves, what happens to the files once his profile is removed from our servers? Does ownership revert to an admin account or do they get deleted along with his profile?