Hello @ddangerfield
I’m not sure about your question. The fields belong to a form, if you want populate them you should insert the form’s shortocode into the content of a page or post of your website.
The plugin include specific modules for inserting the form using different pages builders, like Gutenberg (distributed with WordPress), Elementor, Site Origin, Beaver Builder, DIVI, or if you are using the classic WordPress editor, you can to insert directly the form’s shortcode. For example, if your form has the id 1, the shortcode would be:
[CP_CALCULATED_FIELDS id="1"]
More information in the following link: Inserting the CFF on Page
Best regards.