Before you do this, a friendly reminder that generic content exists in each pre-written message. Content you do not want to send to customers, like the word 'business name' instead of your actual business name.
For instance, if we click this 'Number of class bookings using intro offers', and click the email that's going to be sent, we can see that title has a "[business name]" place holder. Be doubly sure you've checked it all before enabling.
When you're ready, from the folder's page, click the dropdown menu in the top right > then choose Duplicate folder.