To create a new location, go to Account > Account settings > Appointments > Companies.
There you'll find the "Add Company" link.
You will then be able to configure this new "Company" as your business location. Please note that you will need to create a separate booking button for each of your locations.
You can also duplicate your company in order to avoid the process of configuration. You can then edit any necessary information.
To do so, go into Account settings>Companies ( select the company you desire to duplicate). Click on "Duplicate this company" found at the bottom of the page.