Thank you. That does help. So generally speaking... there’s no specific name for this type of fixture? Rather it’s just a matter of having multiple ballast and wiring them to different switches?
I'm looking (but struggling to find) a fluorescent light fixture which can operate on two states. What I mean is that a single light fixture might have two banks of fluorescent tubes inside a single fixture. This fixture might have two on/off switches which would allow you to turn on/off each...