Hi Tim Tim Tim,
I have attached a sample which allows re-submitting/forwarding the form via e-mail. Basically, what you should look into is the hidden section that is only available after the form has been submitted, and the Button Properties which uses Rules and Custom Code rather than a Submit action. There are other approches you could use, but in my opinion using two data connections should be a lot more simple than re-using the initial e-mail submit data connection which will require you to delete the previous recepient to forward the data to another person. This way, e-mail connection 1 is for submit button 1 and e-mail connection 2 is for submit button 2 (Go to Data tab > Data Connections of the sample form).
To hide the section, I used a boolean isSubmitted (contains a true or false value) which is triggered when the initial submit button has been clicked (Check the rules and conditions of the hidden section).
For multiple e-mail recepients, you may check this link. Hope this helps.