Hey Alessandro,
Thanks for reaching out to us!
You can add a custom column to the Events table within your WordPress dashboard using a customization such as http://code.tutsplus.com/articles/add-a-custom-column-in-posts-and-custom-post-types-admin-screen–wp-24934.
The custom meta for the event that you’ll be bringing in will be formatted as “_ecp_custom_$id”. You can find the id for the field by searching in your database or by using the developer tools while your in your WordPress dashboard and checking the “name” value on the field that holds the custom meta you’re wanting to use.
Let me know if this helps.
Thanks!