I'm running MarketPress and ProSites on WordPress MultiSite. I'm trying to figure out how to create a registration form for people to sign up for their own shop. Right now I only have a free monthly option with a percentage transaction fees, though I might change my mind later. I'm not sure if that is relevant at all to getting this up and running.
I watched this video, and it mentions a plugin needed for users to choose their password and shop URL, but it doesn't reference the name of the plugin.