This article covers how to assign an Overlay app to dedicated screens.
Prerequisites:
Overlay App activated. There are several Overlay App types available — see all setup guides here: Overlay App instructions
Manage Display Groups permission enabled for your account (i.e. User group)— this grants access to Tools → Overlay Apps
How to Assign the Overlay App to Displays
Go to Tools / Overlay Apps

Select your Displays:
Choose your Overlay App from the drop-down menu
Click Set overlay app to selected displays to activate



