It's possible to adjust the invoice after the booking has been confirmed.
​
Assuming you've entered the Deal Terms as an hourly rate, simply go to the original booking and adjust the "Set Time" (which can be done at any time, even after it's confirmed). Once the Set Time and Hourly Rate are accurate, the Settlement will automatically adjust to reflect the accurate amount.
​
You can also adjust the Settlement amount manually and directly from your settlements page, but it's best to adjust the Booking Set Time and Deal Terms so that your Booking history and any future analytics are accurate too.