To apply a discount code you will have to create it which has been outlined in this guide if you click here. Once created, you can start applying it to invoices as seen below.
When completing an appointment, there will a box on the right where you can enter a discount code. In this example I have added the one created in the previous article.
Click Apply, if the criteria match for the discount then it will be applied, chaning to total amount owed for the appointment.
Once done, click create and view Invoice, this will apply the discount and display it on the invoice.
