GNOME Bugzilla – Bug 650803
There is no user account type 'Supervised' as mentioned in gnome-help
Last modified: 2011-06-08 21:51:14 UTC
In the page "Change who has administrative privileges", online: http://library.gnome.org/users/gnome-help/stable/user-admin-change.html , point 4, there is a user account type 'Supervised', however, it's not in the system settings, there is only 'Standard' and 'Administrator'. The information is either wrong or incomplete (maybe it appears under certain circumstances?).
Thanks for reporting this bug. It is now fixed in gnome-help:gnome-3-0.