I have two iPhones (one personal and one business), each with a separate Apple ID, so I can keep these logically separated. Ideally, I'd like to use Messages on OS X to be able to send and receive iMessages and/or text messages via both phones. As far as I can see, I can only configure one Apple ID against Messages (in Messages preferences, I cannot add another Apple ID). Is there perhaps a way to run another instance of Messages and/or add my other Apple ID?
I'm on OS X 10.11 and iOS 11, if it matters.