1. Click "CRM"
2. Click "Contacts"
3. Contacts can be filtered first on this screen using the filters to the left or the search box
4. Click "Email Marketing". If this is not visible, go to the Cog -> Integrations and connect to MailChimp
5. It is possible to filter again using the filters on the left of the pop-up screen
6. Select the email(s) to push to MailChimp.
7. Click "Next" to select the audience to push to
8. Select the MailChimp audience
9. Select the desired MailChimp tag(s)
10. Click "Export to Mailchimp"
11. Click "Close"