How do I turn on the auto start-stop feature on my Audi A3?

I recently purchased an Audi A3 and noticed that it has an auto start-stop feature. I am not sure how to activate it. Could you provide some guidance on how to turn it on?

To turn on the auto start-stop feature on your Audi A3, press the 'Auto Start-Stop' button located next to the gear shift. This will activate the feature and it will automatically turn off the engine when the car comes to a complete stop.

Another way to turn on the auto start-stop feature is by going into the settings menu on the car's display screen. From there, you can find the option to toggle the feature on or off.