Marketpress Multisite New Users

It was my understanding that new users would be under a link and get a url like this http://www.mysite.com/shop/username

However, the sites are generating as such
http://www.mysite.com/username/shop

I have no use with this however, for managing a expected large user data base all of the users are showing up in my admin area as users of the network and not users off of my specific page within my network that I created.

Please advise. Is this possible?