How can I change the cabin filter in my Audi A5?

I recently purchased a used Audi A5 and noticed that the air inside the cabin smells musty. I suspect it's time to change the cabin filter, but I'm not sure how to do so. Can anyone provide a step-by-step guide?

To change the cabin filter in your Audi A5, first locate the filter housing under the dashboard on the passenger side. Remove the old filter and replace it with a new one, making sure it is installed correctly. It's a simple and easy process that should only take a few minutes to complete.