You have the ability to sell more to your guests or to allow them to select commonly offered items like a beverage pairing as an optional extra rather than a requirement for your event. To do so,
1. Visit the event editor in the admin
2. Expand the Settings section and select "Use Optional Extras"
3. Click Save & Next
4. A new section opens up further down, and you can add the extra details including price and whether the item is for purchase before or only during the event
Optional extras purchased by the guest will show in the Bookings tab when you expand a guest's details as well as in the guestlist download.