This page explains how to use and Enquiry form instead of a booking page.
If you enable "Allow Enquiries" in a rate the booking page will show a link to an with the text "Enquire" linking to a form instead of --- . The enquiry form will only be available between the start and end dates of this rate and if no price can be found but the room is not fully booked. To give you maximum control the new function can be activated per rate.
You can set a custom text to display before the entry fields in SETTINGS -> BOOKING ENGINE -> BOOKING PAGE -> CONTENT.