From the Edit event details page, please access the Form settings page.
How to edit a form before the form is enabled
If the form is not yet enabled, you can edit the form by clicking the pencil button. Edit the form, and click Save.
How to edit (duplicate) a form after the form has been enabled
If you need to edit the form after you have enabled the form, you will need to duplicate the form.
1. Please click the Duplicate button from the form page.
2. If you are finished editing your duplicated form, click "Save".
3. After the content of your form has been fixed, click "Enable Form". Please save your event to complete setting the form to your event.
* After you duplicated the form, the answers of the original form will still be saved. The questions of the new form will be added in different columns in the CSV-file.