Private Category/Forum

Well I want a private forum but I dont mean private as in so that you have to be registered user or anything. I mean a private category so that like people can post something in it but it wont appear for other users except for like mods +

E.G.


If you can't see the picture good enough if it only shows a "P" then click the other below link:
http://tinypic.com/r/2djqpau/6

You can create such groups and set the permissions.. but you have to manually place the members on a group if you'll do this, beside, I think that's not from a forumotion forum..