This event is used to demo custom fields feature of Events Booking. Events Booking allows you to create custom fields (beside default fields) to collect more information of registrants. For list of supported custom field types and how to setup it, please read documentation at http://eventbookingdoc.joomservices.com/basic-setup/custom-fieldshttp://eventbookingdoc.joomservices.com/basic-setup/custom-fields