The second Invoice line will list the meter excess charge. We'll also set up a "Selling Unit" for the excess, let's call it "Excess Km".

From the main menu strip at the top, go to Setup > Item Related > Selling Units.
Click "New Selling Unit" (or edit your existing unit if you have one set up for this).
Enter the Unit Description "Excess Km".
All options and values should be completely cleared out and unchecked except for the options outlined below:
1. Click the "Metered" tab.
2. Check the "Meter Unit" box.
3. Enter the "Meter Excess" value. In this example, it is 100.
4. Check the "Meter Excess Per Day" box.
Click "Save Changes".

How to set up the excess charge per day item

Now we'll set up the Meter Excess Charge item that we're going to use for the second line on the Invoice. Let's call this item "100km Excess Per Day (per km)".

From the main menu strip at the top, go to Setup > Items.
Click "New Item" (or edit your existing item if you have one set up for this).
Enter the Description "100km Excess Per Day (per km)".
Enter a unique item code if this field in blank, e.g. 100KM
Select the Item Type, e.g. "Misc".
Check the "Non Stock" box.
Click the Prices tab.
Select the Unit that we previous set up, i.e. "Excess Km".
Enter the charger per unit in the Sell Inc column, e.g. 1.00 (we're charging $1.00 per excess Km)
Scroll down and click "Save Changes".

Important: DO NOT set this excess charge item as a "Metered" item.

Maintenance Records

Maintenance Records