UPDATE: A tool called authbuddy has just come to my attention that will managed this better & for 10.7+.
Way back in November 2010 I posted a script that would unlock each secure system preference pane for non-admins, (this can be found here).
With Lion came a more granular way to achieve the same, but rather then have a script for 10.6 & another for 10.7 i’ve amalgamated them with an OS check in the script.
So if the below script runs on 10.6.x it will untick the option System Preferences > Security > “Require Password To Unlock Each Secure Preference” & allow all users to unlock the below preference panes. If the OS is 10.7.x the below are allowed on a per pane level.
- Energy Saver
- Date & Time
- Startup Disk
- Time Machine
(Thanks to John for the Date & Time 10.7 line).