Of course you can! You will simply need to start them from different email addresses.
Once you've created the shops, we here at Tictail can connect the shops which will allow you to use one log-in to access all of your shops.
If you want to connect shops, please send us an email including:
1) The URL of the two shops you would like to connect.
2) The email addresses used when you registered for the shops.
3) The email address you would like to connect them to.
You can send your message to Tictail Support here!
Please note: the shops will still be separate shops with different dashboards and settings, the only difference being that you will be able access them from a single login and switch between the dashboards.