How do I activate my Audi A5's seating memory function

I recently bought a new Audi A5, but I'm having trouble figuring out how to activate the seating memory function. Can anyone help me out?

To activate the seating memory function, first adjust your seat and mirrors to your desired position. Then, press and hold the corresponding memory button on the side of the driver's seat until you hear a beep. After that, you can easily recall your preferred settings by pressing the memory button.