Ok. I think I figured it out.
I had my SKIN set to Black On Black which overall looks really nice on my 65" TV and is for the most part easy to read. But for some reason those check boxes are pretty much invisible.
I will have to play around a bit with the colours. The playlists have always been there but I never saw the check boxes. it was just what I clicked on to go to a particular playlist.
Carl.