If using Dahua cameras one can use the default IP address (192.168.1.108) to change the settings to fit your needs. Use a POE injector for power and connect to your desktop computer or laptop. Then when finished, with the setup for that one camera, change the camera IP address to what is needed at the remote location using the camera's GUI. Once changed the camera will no longer be available via its old IP address. Remove the POE power and move on to the next camera.
Keep in mind that only one camera can be setup at a time as all have the same default IP address.