On the venue settings page, you are able to set the information that is most relevant to your brand. Your Logo, Address, Social Media Links, the list of tables and staff members, and your default VAT and Service charges all can be modified from this page

Extra Charges consist of 3 different types, Service Charges, Taxes or Discounts that you can configure as percentage rate to be added to the total of the bill on checkout to all products (Tablet, QR Dine-in, and Delivery&Pick-up orders)