add note about new events

docs/Eventbrite_import.md

@@ -12,6 +12,8 @@ Now go to the Eventbrite web page of your event, and copy the "eid" field of the
 
 In the EventMan "Import tickets" page, set the copied OAuth token and Event ID; it's also possible to select an existing event that will receive the new attendees, or create a brand new event with the information from Eventbrite.
 
+If you've created a new event, don't forget to edit it to add a registration form so that it will contain at least "name", "surname", "email".
+
 
 ## CSV import
 
@@ -21,4 +23,4 @@ From there, use the "Export to CSV" feature to get the CSV file.
 
 Load this file in the EventMan "Import tickets" page, select an existing event that will receive the new attendees and click the "Import" button.
 
-If you select this import method, please beware that you probably also want to edit the tools/qrcode_reader.ini configuration file (see the comment about the limit\_field setting).
+If you select this import method, please beware that you probably also want to edit the tools/qrcode\_reader.ini configuration file (see the comment about the limit\_field setting).