WhatACart allows for multi-store management using admin panel. By default, WhatACart comes with a single store named “default”. Please refer to blog http://whatacartblog.com/stores/setting-store-in-whatacart/ as how to set up a new store.
Once a new store is set up, it would be displayed in the top navigation as shown below
Now if the user selects the “Second store” from the dropdown, the screens dependent on the store would display the data accordingly. For example products, product categories but not manufacturer.
Similarly in the front end, a multi store selector would be displayed to the customer.
Here as well it is same as admin panel that is on changing the store, the screens having data dependent on the store would be effected but like customer data, it would not be impacted.