You can customise the fuel type drop-down which appears when adding and editing appliances. Fuel types are things like Gas, Oil, Electrical etc.
Adding a fuel type
First, go to your system settings.
Under the 'General settings' section, select 'Fuel types'.
You will see a form on the left-hand side and a list of existing fuel types on the right-hand side. You can add your new fuel type on the left and it will appear on the right side when you click 'Add Fuel Type'.
Editing a fuel type
Click 'Edit' next to the type of advertising you wish to change.
You will see a page where you can edit the information with a space to name the fuel type. Change this information as required and click 'Save Fuel Type'.
Deleting a fuel type
Click 'Delete' next to the fuel type you wish to remove.
To confirm you wish to delete this item you will need to type 'delete' into the box, then click 'Delete'.