Meta-Marketplace

If I have a community around my UE4 game on Epic Marketplace and I wish to let my users submit user generated content, how would this work?

Could I create them a child account of my publishing account or would they have to signup themselves?

Thanks.

Currently the plan for the marketplace is not to have games there, but rather content for the creation of games. I would expect that if they do end up having a games section of the marketplace that it wouldn’t include things like user mods