After enabling the option, Linda configures product rules. Let's see how she proceeds from the product rules tab, which you can open through the application launcher.
Example :
The product configuration Abroad is associated to the Arsenal account, a product rule in this configuration is associated to the product sneakers with a 0% VAT rate. When creating an invoice line or a quotation item for the account Arsenal containing the product sneakers the product rule is automatically applied and thus the VAT rate of 0% will also be filled in.