Click on the First Name of any guest in your list (remember - you may have to first filter by ‘All Invited’ to see guests who have not yet responded to your invites). The ‘Edit Guest Details’ box appears.
In the ‘Search To Add CC’ field, start to type the name of the contact you wish to add as the CC. A dropdown of matching names from your Contacts will appear. Select the correct contact from this dropdown.
Click the ‘Save and Re-send Email’ button.
Note: You can only add as CC’s contacts who are already in your Contacts database. If the individual you wish to add as a CC is not in your Contacts database, you must first go to Contacts and add them. Then, return to your event Guest List and add this new contact as a CC.
Note: Adding a ‘CC’ to a guest via the Guest List only adds them for that event. To add an ongoing CC to a contact for all events by default, go to Contacts.