How do I add names to the Name Generator?

I would very much like to add some custom lists to the name generator, but can’t figure out how to do it with the Windows version of Scrivener. I found instructions for the Mac version but it refers to options that the Windows version doesn’t seem to have.

Is there a way to add names?

I would like this feature too. Maybe even adding categories of my own since some nationalities are missing from the version in the current beta (i.e. Irish last names are missing).

I would like this feature too. And same than Belinus, add names classified by provenience: italians, spanish, french, etc. etc.