Unsinc device
How do I unsinc my business iPhoneX from my other devices?
Mac mini, macOS 10.14
Question marked as
Top-ranking reply
Very likely the proper course of action is to acquire a new Apple ID to use for your business persona. This will appear to be a totally different person than your personal Apple ID.
If you pursue this method, you would first need to thoroughly and completely cleanse your business Apple products as follows, then "move in" using your new Apple ID.
What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support