After you export a Form Template as an HTML file and modify it, you can add the HTML file as a custom view of the Form Template. For more information about Form Templates, see
Creating JavaScript Submission Buttons
If you want users to submit Forms by clicking a button on the Form rather than the Apply button in Content Server, you can create a JavaScript button in the HTML file that becomes the Form Template. This is necessary only for Forms that have both a revision and a submission mechanism. If a Form has no revision mechanism, the required button that sends Form data to the HTTP server activates the submission mechanism.