If you need to edit the name, email, or any other information about people in your loop, you can do so either on the main loop page or via the View Details page (see step 5 of this article to learn more about View Details). To accomplish this on the main loop page, open the loop and scroll down past your documents to the section labeled People.

Click the name of the person you wish to edit to open the Edit person window.

Click on any of the fields to edit the entry with you keyboard.

You may run into circumstances where you cannot edit the name or email of someone in the loop. This is the case when the person in question has already signed up for their own dotloop account. dotloop will display a message in the edit window letting you know to reach out to the person to request them to update their information from their account. They will need to follow steps 1 and 4 in this article to change their information.
Note: you can only use one name (person) per email address.