How to handle tips?
Configuration
From the dashboard, click on :menuselection:`More --> Settings`.
Add a product for the tip.
In the tip product page, be sure to set a sale price of 0€ and to remove all the taxes in the accounting tab.
Adding a tip
On the payment page, tap on Tip
Tap down the amount of the tip:
The total amount has been updated and you can now register the payment.
