How does it work?
sorry, the question is: What does the Keyboard Indicator do and how does it work?
Enabling this option shows icon which displays NumLock/CapsLock/ScrollLock status. I made it for my EEEPC, where keyb status is significant, but not visible.
after you turn it off, how do you start it back up?
Minimize to tray any window and check "Keyb Indicator" in tray menu.