question about mirroring displays

[wfriedwald]

2018 mac mini, running Big Sur

I am currently using three displays, 1 HDMI and two using the USB-C ports.

my goal is to have one display on the HDMI, but to have the other two mirroring each other. (the two USB-C connected monitors)

is that possible? or is it all or nothing, I mean, either one display mirrored on all three OR three completely separate displays?

let me know if there's anyway to do this ... thanks for any suggestions!

w

 

[wfriedwald]

wait! I think I figured it out! Yes! this seems to be working!

Set up some displays for mirroring and others for an extended desktop​

If more than two displays are connected to your Mac, you can specify that some displays use mirroring, showing the entire desktop, and other displays show the extended desktop (displaying the desktop across two or more displays). For example, if you have three displays, you can have two displays showing the same information and the third display showing the extended desktop.

1. Use the task above to set up all the displays as an extended desktop.
2. Press and hold the Option key and drag one display icon onto another display icon to mirror those two displays.