I use Parallels Desktop (running Windows 10) and have an external monitor, but I dont want Parallels/Windows to detect/extend to said monitor automatically. I like having my Mac on one monitor and Windows on the other, and I can easily accomplish this by going to Display Settings in Windows and, under Multiple Displays, changing from "Extend these displays" to "Show only on 1".
However, I am constantly moving throughout the day and connecting/disconnecting from the external monitor, and, every time I reconnect, Windows automatically detects the external and changes the display settings back to "Extend these displays".
How can I prevent this from happening? Exploring preferences for Parallels didn't come up with anything useful (although I may have overlooked it).
Running Parallels Desktop 12 on Mac OS Sierra 10.12.6.