The "About Us" section on your Booking Website is a great place to display your business's address. However, it allows for only one address.
If you want to include a second address, you can do so in your account settings by entering it in the "Note" field under the address section.
To access this setting, go to Business - My Business - Business Details, and click "Edit" in Address section:
Please note that the second address won't appear on the map.
In case you have more locations or addresses and you would like to have different opening hours or specific calendar for each location, check this article.