If you would like to manage multiple clinic locations, you have a couple options.
Option 1 (Separate patient lists per location)
If you want to retain separate patient lists per location, 2 separate clinic accounts need to be created.
Option 2 (All patients listed in a single clinic)
If a single patient list works for you, but you would want to book appointments at 2 different locations, then you can specify the location of the appointment or availability slot when you create it. All of this can be done within a single account.