Lock Mirror on Frame

I would like to have the mirror feature be locked to a specific frame so that i’m able to see direct changes on the device of choice.

What happens today; I select a frame that i want to view, go to edit another frame ( this could be a component ) and mirror switches aautomatically.

All i want is a way to hold the focus on the one frame until i say. It would make life so much easier espically during meeting where changes are requested and the test device switches between too many different items distracting the stake holders.
Thanks.