How can a tag be added via MailChimp upon submission of a Webflow form?

Right now Mailchimp is connected to my forms– but I cannot figure out how to enroll a contact in an automation unless I add a tag, and I do not know how to pull that off with the form submission.

Anyone familiar with this?

You can assign the user to a tag/group in your form.
Refer to the guide to see how to configure your tags.
Automatically Add Subscribers to a Group at Signup.