Graduate the audio level of TwoNav application and the volume for each audible element individually.
•Mute: Enable/Disable the general audio level of TwoNav application.
•General: Manage the general audio level of TwoNav application.
•Alarm: Regulate the audio level for alarms and radar warnings.
•Clicks: Regulate the audio level for buttons pulses.
•Voice: Regulate the audio level for voices indicating manoeuvres.