Mail Chimp Integration Plugin Don't Understand how to use

I installed the MailChimp Integration plugin with API but I do not see how you add a form to the site with the plugin. There is no MailChimp widget and I can see a way to generate a shortcode to embed. The MailChimp plugin from ContactUs has a form for widget or shortcode.

Is there more instruction manual besides what is on plugin description page?