Use the in-app map to find Dotts nearby. Select your scooter of choice and tap 'let's ride'. Then, scan the QR code on the scooter and tap 'unlock' to start your ride.
When you've arrived at your destination, park on the sidewalk without blocking pathways. Click 'end ride' to finish your ride. This also automatically locks the scooter. That's it!
Also check: Where should I park?