Any info on Publishing Models to Fab?

Still can really use help with this.

I have tried multiple ways to upload the assets but have not been able to figure out variants since the submission process only allows one version of each file type. So when I upload the Raw and High versions together in a zip or separate it only notices one model and combined the rest into one it calls ‘source’. So no way to make variants and no way to include different meshes into the same product using the current Fab submission.