I need a list of all the custom fields Events Calendar PRO uses. Can you help?

Sure, take a look:

• _EventShowMapLink
• _EventShowMap
• _EventAllDay
• _EventStartDate
• _EventEndDate
• _EventVenue
• _EventCost
• _EventOrganizerID
• _EventPhone
• _EventRecurrence
• The Venue Custom Post type uses:
  • ‘_VenueVenue’,
  • ‘_VenueCountry’,
  • ‘_VenueAddress’,
  • ‘_VenueCity’,
  • ‘_VenueStateProvince’,
  • ‘_VenueZip’,
  • ‘_VenuePhone’
• The Organizer Custom Post type uses
  • ‘_OrganizerOrganizer’,
  • ‘_OrganizerEmail’,
  • ‘_OrganizerWebsite’,
  • ‘_OrganizerPhone’

Posted in: Customization