If you are on a single-rate tariff, you can set up smart charging by specifying a budget for the energy you want to consume and a 'ready by' time. The car will begin charging as soon as it is plugged into the car and will continue until it reaches your specified budget target.
If the car becomes fully charged before reaching the target, it will stop, and the charger's status will change to 'Suspended EV', indicating that the car cannot accept more charge. The same schedule based on the specified target will be automatically recreated the next time you plug in the car.