Windows 10: how to mirror 2nd monitor to 3rd monitor

I was using win 7 with 3 monitors, extending desktop to second monitor and mirroring the second on the third monitor. I don't see how to do this in Win 10. Option not available?

:)

 

recognizing 2nd and 3rd monitors

when I power off my machine does not recognize the 2nd & 3rd monitors.

 

2nd and 3rd monitors freezing

I'm on the latest Windows 10 version.

At random times (normally after leaving the computer in sleep mode) my 2nd and 3rd monitors freeze up, resulting in static images of what's there. I can still (somewhat) do things on them, but they mostly remain frozen. For example, I can make a fullscreen
application windowed (ctrl+shift+f) and vise versa. I can also move things from either one of the monitors to the 1st monitor, but I can't do this the other way around. When I move them, they still appear frozen on the 2nd or 3rd monitor whilst being dragged
to the 1st, and they stay there when being dragged from the 1st.

Turning off the 1st monitor (pretty much unplugging it due to the monitor) allows the others to function freely, but when I turn it back on, the problem restarts. This happens when unplugging the monitors as well.

 

Multiple mirrored monitors

I am trying to have the screen and programs on my desktop mirror on a second monitor and a projector. How do I do this in Windows 10? I have connected all 3 to the desktop and the background on the main monitor shows on the 2nd monitor and projector,
but I can't get the apps or programs to show on either the 2nd monitor or projector. I ran a test and the system recognizes the main monitor as 1, the 2nd monitor as 2 and the projector as 3, but then I can't get 2 and 3 to show anything I am doing on 1.
Any thoughts?