All accounts with "Manager" permission have the ability to edit vehicles on file.
1. Tire Dealer System
2. Point of Sale Menu
3. Counter Billing
4. On the right hand menu in the blue bar select "Find Vehicle"
5. Search for vehicle in question (you can hit "select search" to search by other fields)
6. Right click the vehicle you'd like to change and select "EDIT" from the menu.
7. Edit any of the details including VIN and License# and hit GO.