From a Home screen, navigate: Apps icon > Settings > Display, gestures & buttons. If unavailable, tap the Apps dropdown menu (located in the upper-left) then tap Alphabetical. If still unavailable, refer to Manage App Icons.
Tap Screen timeout then tap an option (e.g., 30 seconds, 2 minutes, etc.).
Tap Daydream to choose what to show on screen when device is idle or docked.
Tap Home, tap an option to turn on then tap Back.
Swipe up or press and hold for Google Now
Swipe up for Google Now, press and hold for menu.
Tap Home double-click speed then select an option (e.g., Normal, Very slow).
Tap Media gestures to enable or disable. Enabled when a check mark is present.
Tap G-Sensor calibration then tap Calibrate. When calibrating, ensure that the device is placed on a flat and level surface.