Description of General Options in MailChimp WordPress plugin.
This section lets you to configure general settings of your form. You can publish or unpublish your form with Published option and enable or disable Saving data to your website database and Submissions section.
Themes option allows to select the theme of your form. Click Preview to check the display, or Edit to go to MailChimp WD Themes page.
If you’d like to have plain fields on your form without labels, enable Hide labels setting. And Required fields mark will define the identifier for required fields.