1. Login into your event (you have to be an admin of this event)
  2. Click on types in the sidebar
  3. Create or select a new
  4. Click “Add field”
  5. Give your field a label
  6. select the type of your field click on “Next”
  7. Fill in the options, set the visibility and press save
  8. Optional: add the field to your tables as column
  9. Press “Save”