Unfortunately, there is no such option in the plugin, as both admin and customer get their own confirmation emails. Could you specify in more details in which cases getting a copy of customer confirmation emails is needed?
Such changes would require plugin custom development. At the moment there is an option to resend the confirmation email to the customer, but not the admin. We will keep your request in mind and in case there are more similar requests from other users, we might consider adding such option in one of the plugin future updates.