Preparing 3D Asset collections for FAB

Dearest FAB team,

I’m a long time Sketchfab contributor, I’ve been working in UEFN for some time now… and I’d like to start bringing some of my assets as “building blocks collections” on FAB.

What is the process for a Sketchfab creator, to start NOW bringing things in FAB, so that I can distribute them via UEFN?

Thank you!