Go to Settings > Customisation > Enquiry

Enquiry Page Introductory is displayed at the top of the Enquiry form

1 This option is used when you do not wish to redirect parents to a page on your website.

2 You can add a URL here and this will automatically send the parent to this URL.

NOTE: If you have a URL (option 2) then option 1 is not available for use or editing.