Group assigned message boards? Multi-level boards

Hi! I would like to set group-level permissions onto boards, so that only members of a particular group can view a board. Is it also possible to have a "container" for a board, or sub-levels to the board, if you will. If I can't do something like what I'm asking, is there a workaround?

Child boards (containers, sub boards) are not implemented in the BoardsPackage yet.

You can use the GroupsPackage to limit a board to a certain group.