You must be logged in as an Administrator to manage users!
Steps
Click the Manage users on the navigation panel.
Click the user you wish to change the email address of, you can find them either by using the search input or by scrolling down the page. The users will be ordered alphabetically.
You will be presented with the single-user view:
To change the user's email, click the Change button to the right of their existing e-mail information:
A new form will appear allowing you to input a new address, and then confirm by click the Save button:
