On this tutorial (and all others I could find) they show this image or similar:
I remember using this in the past for my page:
On this page I have two static FBML links on the left, and I would like to have a third one. However when I tried going into the edit screen, like the tutorial says, I get this:
add additional fbml box button is missing.
Is there a new way to do this that's even more obscure than the old one?