It requires at least 1.11.0.4666 mentioned in article I linked.
collections is only available in beta version of server right now. If you want to update to a beta version you need to change the update channel to beta on the bottom of that screen you are on with version number. ( or download it manually)
if you do not want to use a beta version of server you will need to wait til next public version is released. (i do not have an ETA)
Ok I have this problem but running Version 1.11.3.4803
I can see my collections if go to the movie lib, but if I use all and then try to just see collections like the first pic all I see is movie and folder as options