Automatically add tags when using embedded signup form?

Automatically add tags when using embedded signup form?

Can you provide the step by step procedure

You will first need to create tags in your Mailchimp account:

Now integrate your sign up form with Mailchimp. Select "Static tagging" and select the tag to show. Complete the integration.

When you fill and submit the form, you can see the contact details with tags linked as shown below from the MailChimp account:

In your case, if you are using an embedded form, first complete the integration setup on the form, embed the form on the required website and then submit the form.

Here is a related guide to embedding form: https://www.jotform.com/help/34-Embedding-a-Form-to-a-Web-Page 

Do review and let us know if you have any further queries.