We've created a quick video tutorial showing you how:
As well, below are written instructions with screenshots if you prefer:
Staff users need to contact their Administrator or Manager to change their e-mail addresses.
Administrators and Managers can update their own e-mail addresses by going to their Profile tabs and clicking the edit icon next to their name.
Administrators and Managers can update the e-mail address of any user on the subscription by going to their People tab. (Managers can do this only for people in their departments.) Once on the People tab, select the individual whose e-mail address needs to be updated. Then click on the edit (pencil) function in the upper right corner of the user's profile panel.
Admin/Manager - Update E-mail Address
Admin - Update Staff Profile Information