Install MailChimp for WordPress plugin

Connect the plugin to your MailChimp account

Create your lists in MailChimp

Create a form and select the list

Edit the form and Add the form with the shortcode

We use this form html for our form from demo.

COPY the mailchimp_form from this URL.

Replace the form in the shortcode example from demo content or add in a different text shortcode in a different location