When the app is open, you won't need the controller for navigation. Simply use the center of your vision to look over a choice. Hold your gaze over the choice for a few seconds until a white circle appears. Maintain your gaze until the white circle expands and pops.
Note: To return to the Axon training room during the experience, quickly tap the Back Arrow button on the controller. A short tap will take you to the Axon training room. A long press exits you out of the app to the main menu.