To add a fuel type, click on the "Fuel types" subitem in the "Vehicles" category.
There you click on the button "ADD FUEL TYPE" in the upper left corner.
Active: Here you select whether the fuel type should be treated as active in use or not.
Name: Here you enter a system internal name for the vehicle type. Strongly recommended to facilitate assignments and to keep the overview.
Description: Here you enter a system internal description for the fuel type. (optional)
Finally, click on the "SAVE" button at the bottom.