Here's a "simple" example of an HTML form with text inputs and a file upload field. This form will submit directly to your Formidable endpoint.
Create a form with the form
tag and set the action
attribute to your Formidable endpoint URL.
Set the method
attribute to "post" and enctype
to "multipart/form-data" for file uploads.
Add input fields with appropriate name
attributes.
Include a submit button to send the form data.