Font naming for OSX and Win

Is there a way to name families so that they appear differently in both systems? Like Google’s Roboto does: in OSX it’s one big “Roboto” family, in Windows it’s four “Roboto Th, Rg, Bd and Bk” families.

I know how it’s done in FontLab, but can Glyphs handle it (with parameters probably)?

This is currently not possible.
But for most styles it will be done automatically. If you have a instance like “Black” it will show up as “Family Black” on Windows and “Family” on Mac.