In the locations block you can fill in three types of addresses:
Billing address: here you can give up a billing address.
Delivery address: here you can give up an address were ordered printed exam copies can be delivered.
Exam locations: IP-addresses of specific locations such as teaching or college rooms can be specified. This way these locations can be selected so students only have access to a test when using a PC with an IP-address from that specific room. The range can be split by means of a dash.