How do I add email addresses?

I am not sure if I have understood your question correctly. Do you mean to say that you want to send submission emails to multiple email addresses?

Yes it is possible to achieve your requirement and here are the options available:

#1. You can add multiple email addresses in the "Recipient Email" of your form's notification email alert. The following guide should help you:  https://www.jotform.com/help/39-Send-Notifications-to-Multiple-Recipients

#2. You can also add new notification email alert in your form and set the "Recipient Email" to desired email address. The following guide should help you how to add new notification email alert in form:   https://www.jotform.com/help/25-Setting-up-Email-Notifications

Hope this helps.

Do get back to us if you have any questions.