Adjust the system volume
To adjust the system volume, press the Volume key up or down. To set the device to vibrate, press and hold the Volume key down. To deactivate the vibrate feature, press and hold the Volume key down again.
Activate Etiquette pause
You can temporarily pause the music player or mute event alarms by placing the device face down when Etiquette pause is activated. To activate Etiquette pause,
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Tap Start.
On the Productivity screen, tap Settings.
On the Basic Settings tab, tap Motion Settings > Etiquette.
Tap 
next to Enable etiquette pause.
Tap Done.
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