Closed Board to All but a speciific Group or Users

[yinyang]

I'm updating my board. But I need help with some opinions, etc. and would like all the moderators to be able to see the changes i'm making.

Is there a way to turn the board on to a specific usergroup or users?

As far as I know, only administrators can see a closed board and i don't want to give these users that many permissions at all.