Outlook add-in - create new Lead

Hi All,

I am testing the C4C Outlook add-in but am having trouble creating a new Lead from an email. I can track an email to an existing email but I cannot seem to find how I can create a new Lead, can someone let me know how?
When I use the 'Add Email' and track it to a reference I don't have the option of creating a new Lead, only selecting existing Leads.

Thanks in advance