What you need
Manage Display Groups permission enabled for your account. This grants access to Tools → Overlay Apps.
Displays that currently have an overlay app show an orange rim in the Overlay Apps view. Hover your mouse over it to see the name of the Overlay app.
How to remove the overlay app from all displays
Go to Tools → Overlay Apps
Click Remove all overlay apps from all displays in the top right corner.
How to remove the overlay app from one display or a smaller group
Go to Tools → Overlay Apps
Select the display with the orange rim, or select a group of displays that have the overlay app
Click Remove overlay apps from X selected displays in the top right corner (X is the number of selected displays)
This button only affects the displays you selected. Other displays keep their overlay.
Need to turn the Overlay back on?
To show the overlay again, assign it to your displays.



