From the cart screen, hit **+ADD** at the top, next to the search field.
A window will pop up, add in "**No Show Fee - Manual Charge**" under **Custom Item**, add your "no show"/cancellation fee amount (for example, $50) under **Custom Amount, and then select "Add."**
Once you're ready to charge the patient, hit the blue checkout in the bottom right, which shows the total bill.
Once you've successfully charged the patient, you can print and/or email the invoice to them.