Each event starts with a default zone, which you can change its name by clicking on the pencil. By clicking "add zone", you create a new tab with the name you gave the new zone. At the same time, a tab is created in which you get an overview of your total order.
Click on a product photo in the overview, this will take you to the detail page of that product. Via the button "Add to event" the product appears in an overview on MY EVENT