This article will show you how you can give clients a treatment or product free of charge.
After proceeding through to the purchase screen you will have an option to apply a discount. This can be found under the Discount tab and is applicable by selecting the plus (+) icon as shown below.
When presented with the 'Choose Discount' menu ensure you have Percentage selected from the drop-down and then 100% is entered. When you select Ok the discount will be applied to the treatment / product selected.
You can now proceed to pay off the appointment / purchase as normal.