I have a problem with making unavailable document classes available for LyX on Mac OS X. I have installed LyX and MacTeX (latest versions). I can see the
nature class in
TeX information of LyX, but when I go to
LyX > Document Setting > Local Layout > Library > TeX > Root >
texmf-dist> TeX > LaTeX > nature
I can see the
nature.cls there but it looks like hidden files and cannot select it to make it active. I have checked this for available classes also, those are hidden too but they are working. I am confused now. May someone guide me on this please?