How to create a Recently Added smart playlist for Movies?

I’ve created a number of smart playlists, e.g. categories. Now I want to add a Recently Added playlist for movies added in the last e.g. 30 days, and it should display the movies with the most recent at the top.

And while I’m at it, when clicking Movies, it displays a list of recently added titles. I’d like to remove that, so that I caqn use the playlist instead. I don’t have access to the AdvancedSettings.xml file in UserData as it is running on a QNAP NAS, and QNAP doesn’t allow access to those directories\files.

Thanks in advance.