You can set your status as either on or off the vessel directly through your personal Voly Crew account on either the app or web browser version of the app.
When in the app, you will see your status as a dot on your profile icon on the top left of your screen.
To change your status from In, tap your profile icon. Once tapped, it will switch to out, and vice versa.
Your live status will change for the rest of your crew to see as soon as you've changed it.
When you’ve assigned yourself, or been assigned as on leave, your app will automatically show as ‘On leave’. This also means that your app will be restricted for certain functionality for security reasons, ie you will not be able to access the In | Out board for the vessel.