Does anyone know if there is a way to be able to put multiple email address in?
I'm not sure of your use case, but if you always want to send a copy of the form submissions you can use the Email Service Task in your business process or call a workflow that has an email activity.
The submittors in this process are Director Level staff. They asked if multiple emails could be entered. They have to send a copy to themselves and then forward to different recipients or enter one email and then select the Email button again.
I would look for a way to build that into the business process so it would be automated. Put some fields on the form that the submitter could select from as recipients and then use the email service task to send the emails.
Currently it doesn't support typing multiple emails, I will add it as a feature request.