Honestly, I am not sure. I am going back/forth with Google regarding moving our mail to them (via GoogleApps), but that won't be for another 3-6months as with mail, users, etc. I need to plan this out.
So for now, I simply goto
login.postini.com, login, goto system administration and that is where everything/everyone is. The link you showed looks promising, I did create a login (now have to wait 24 hours) but hey! at least it looks promising.
Thanks for the post.