If you want to add a contact form to your website which directly creates enquiries in Sonas, you just need to create an external embeddable form of type "Enquiry" like described here.
Once you are done, whenever a visitor submits the form, messages will appear directly in your inbox (if you allow to select multiple venues, one message will be created for each venue) with all the extra information that was collected through your website, including utm parameters.
