In the past, we set up Outlook archives so that email could be stored on the A&S file server and free up the limited space on the Exchange server. This was an imperfect system because the archive file type (.pst) doesn't perform very well on server storage, but if we moved the file to your local desktop's C drive, it might be lost in a hard drive crash or Windows reinstall.

As an owner of a resource mailbox, you may need to grant permissions to new people from time to time.  This is the way to add new members and/or owners to the mailbox.