How to change Mailchimp subject line after editing body text

Question: @mailchimp how can I change the subject line after I’ve edited email body? (I tend to refine subject line after I write up the email text)

Answer from MailChimp:

To make edits to the subject line of a campaign, you can just go back a step in the builder to ‘Setup’. This step is where you can edit the subject line, name of campaign and the from name/email address.