how do I add additional email addressess

Hi,

Do you mean you want to add multiple recipient email address to your form's Notification Email or Autoresponder Email? To add multiple recipient, enter comma and space separated email addresses in the "Recipient E-mail:" (i.e. john@email.com, steve@email.com). For more information, you can check this article: Send Notifications to Multiple Recipients.

Do let us know if you need further assistance.
Regards.