Same-screen playback allows a group of TVs to play the same program at the same time, creating a more stunning display. 
To enable same-screen playback, follow these steps.
Create the program
Create the program using the normal program production workflow.
Publish the program
When publishing, select the device group/device you want to play on, then click Publish.

In the publish dialog, click More Parameters to open the "Start/End Time / Priority / Playback Mode" settings.
In Playback Mode, select "Synchronized Playback" and confirm to enable same-screen playback.
