Make sure your bike is locked to a bike rack (or a public pole) in the service area. Then, hit the “end trip” button in the app, and follow all of the on-screen instructions. Your ride will not be ended until you have followed all of the steps in the app, including taking a photo of the locked bike.
To lock the bike, first take the pink cable and wrap it around the bike rack. Place the loop on the end of the cable around the back wheel-lock, and then pinch the orange button on the back wheel lock and slide downwards to lock the cable as well as the wheel. For more information on how to lock the bike or end your trip, watch the videos above.