To set your iPad's Camera Mode, tap on the "Menu" button seen on the top left. From there, you'll see the EventBooth Menu, which allows you to access Settings, Lock the Screen, or Change Events.
Tap on the "Settings" button. This will open the "Settings" screen.
Tap the "Camera" button, which will take you to Camera settings.
Now you can choose to EventBooth use the "Front" or "Back" camera by default, or your own preference by selecting "User Select". You'll notice a checkmark appear next to your selection.
To return to the "Settings" screen again, tap the back arrow button at the top of the screen. Your selection should now appear on the "Camera" button.