This controls the primary orientation of the device when your Hype is being played. Is your Hype designed to be played in portrait or landscape?
How should the image adjust when switching between landscape and portrait? You can chose here to crop the image or have it expand to fill the screen. How these options work will depend on the Primary Orientation.
With this option turned on players will need to tap the screen once before the Hype starts. With it off Hypes will start automatically once they load.