Top menu >> Customers >> View customer >> Locations tab >> + Add a location
To create a location manually you have to go to the Location tab on the customer page.
View the customer you would like to create a location for.
Click on the Location tab and +Add a location after
Enter the Location name and any other information. It proves to be helpful to incorporate either the city or a partial address to the location name, this will make it easy for users to identify the location when they are looking for it in a dropdown field anywhere else in the application.
Click OK when done.