Gnome control centre is a vital piece of the Gnome Free Desktop. Unfortunately, the powers that be at Canonical don’t believe it should be in the System menu by default. It’s easy to miss if you don’t know what you’re looking for, but I found it thanks to nolliecrooked and Legace on the Ubuntuforums
right click applications/places/system and select edit menus.
scroll down to system on the left hand side and click it once.
then tick control centre in the right hand pane.
you now have the control centre in your system menu. you can drag it to the panel/desktop to create a shortcut.
Right-click on the panels, select Add to panel, select “Custom Application Launcher”.
Enter the following details:
NAME: Gnome Contol Center
Press OK and you’re done