In my website there’s a simple contact form created with WPForms:

It’s implemented by simply creating two input boxes, hiding their labels and adding “inline-fields” to the entire form.

A few days ago my legal advisor told me to add GDPR checkbox to this form (“I agree with the Privacy Policy”).

I know how to create such a checkbox, but it gets displayed between the input “Numéro de téléphone” and the “Envoyer” button.
Is there a simple way to keep the current layout of the form and add the new checkbox in the next row instead (i.e. below the existing inputs)?