HAHAHAHA chris.
An override is when the engagement dogs are machined in a way to where the 1st to 2nd gear and 2nd to 3rd gear do not need the clutch used to switch gears. But will need to be used when shifting from 3rd to 4th and 4th to 5th. Basically just pin it in 1st gear and shift to 2nd than third with no clutch.