To lock the ride, align the bike in front of the anchor and push it firmly into the anchor. You may need to lift the front wheel slightly by pushing up on the handlebars.
You should hear a "click" as the mechanism engages the bike, which should lock into place. You will also see the light at the base of the anchor change from BLUE (or ORANGE if you have reserved an anchor) to GREEN.
If you are able to remove the bike from the tether, it has not docked properly and your ride is not over. You will receive a notification from the Ride On app when your ride is successfully completed