Note: you will only be able to use the crew watcher if you've paired beacons first.
Activating the Crew Watcher is really easy. Just tap the top right toggle once and wait for all systems to turn green. Conversely, when you are done, disable the crew watcher by tapping the same, top right toggle. All systems should now turn gray to mark inactivity.
IMPORTANT: Failure to disable the crew watcher can result in false alarms when the phone and beacon(s) get separated and or reduce the beacons battery life.
Quick tip: Do not turn the crew watcher on and off repeatedly. If you do you might have to toggle your bluetooth or restart your phone to continue with the app.