Open the meeting you would like to preview, click the Control button.

Within the Control button options, the preview feature will be available if it has been activated for your account and your user has the proper Role in Harmony.

The Preview feature will open the player and let you see the live feed that will be broadcast once the meeting is started. 

The feature is great for checking the video feed being provided by your cameras, switcher or Zoom stream before starting the meeting or order to make sure all is ready to broadcast.