Add local group to folder and subfolders without disturbing existing permissions

I have run accross one or two utilities that will allow a local group to be added to all subfolders and files without disturbing existing permissions however they are restricted copies. Anyone now how to do this in Hyena? Perhaps a free tool that I can call from within Hyena.

[cmccullough]

Re: Add local group to folder and subfolders without disturbing existing permissions

You can use xcacls with the /E and /T switches.

The /E will do an edit of the ACL instead of replacing it, and the /T will change ACLs for files in current directory and all subdirectories.