FUTAOrders is a multi-vendor ecommerce website primarily for Futarians and secondarily for all. This video shows how to add a downloadable product on FUTAOrders as a vendor.
You can watch how to register as a vendor here:
You can as well find out how to switch to a vendor if you are already a customer in this video:
For tutorial on the Vendor Dashboard Overview:
You can find out how to add a simple product here:
Also, downloadable product here:
And here, group products: