There is a demo located here: VaultWiki Demo
But if you're curious about the admin side, here's some screen shots.
Admin CP Navigation
This section will undergo a revamp for the next major release.
Usergroup / Forum Permissions
Yes, this form is in both places.
Usergroup Permissions (Special)
Wiki Code Manager
After clicking "Edit"...
And of course there are settings, but there's too many to post here in a nice looking screen.