I understand how to save a file. My question is do I save a new base file or a new DMX file? Wouldn't a new DMX file create a new DMX-3000 device? Maybe I'm not explaining my question right.

I guess my question is:

Which file should I edit? To add devices, add DVDs and make changes to.

The base? The DMX? Or do I create a new file saved as something else.