Note: To charge a card on file you will need to have connected a Square merchant account.

To charge a card on file follow these steps:

1. Open the appointment that you would like to process a payment for
   
   
   
   
2. Switch to the Invoice tab on the left
   
   
   
   
3. Select the Add Payment button 
   
   
   
   
4. Input the payment amount
5. Choose Charge card using Square for the How is the client paying? option
6. Ensure that the Charge card on file option is selected
7. Select the correct card
   
   
   
   
8. Click the Pay button