How to use Audi A6 air conditioning system?

I've been having trouble figuring out how to use the air conditioning in my Audi A6. Can someone provide a step-by-step guide on how to use it efficiently?

To use the air conditioning system in your Audi A6, follow these steps:
1. Press the A/C button, located on the center console, to turn on the system.
2. Adjust the temperature to your desired level by using the temperature control knob.
3. Select the appropriate airflow option, such as upper vents or floor vents, using the vent control buttons.
4. Use the fan speed control knob to adjust the strength of the air flow.
5. Sit back and enjoy the cool air! Keep in mind that using the air conditioning can cause a slight decrease in fuel efficiency, so only use it when necessary.