Schematic Libraries 5.0.2 problem

I’m having some trouble finding it as there have been more threads about problems with migration, but I think I found the right thread:
https://forum.kicad.info/t/library-management-in-kicad-version-5/14636

Can you open a schematic and then “a” from “add” ?
Can you add anything to a schematic, or do you have no schematic symbols at all?