Subfolder Windows, how to?

Hello! I’ve made a request a while back in the unity feedback forum:
link text

The global idea was to have several “Project” tabs that each have it’s own root and name in order to sort and divide aspects of the game like script, integration, prefabs and visual/sound.

Someone told me there that it is not in Unity, but I could do it myself. I’m not really sure (in fact I have no clue at all on) how I could do that, so I’m asking there, for you, kind, experienced people!

You are talking about just clicking 'Create > folder" in the project window?