Enable the Add-ons section
At the bottom of your create event page, you can click the eye icon next to “Add-ons” to enable add-ons for your event
Create an Add-on
At the top of the advanced options, there is a section labeled “Event Add-ons” Here, you are able to create a new add-on and customize it.
Edit Your Add-on
You are able to set whether your add-on should be available to attendees, vendors, or both, as well as its name and description.You can also take advantage of tiered pricing here to offer discounts for bulk purchases of add-ons. Once you set all fields as desired, save the add-on and your event.