How to update your contact information in the Global Address Book for Office 2013
Adding contact information to Global Address Book in Office 2013 can be retrieved later from any login location.
An Outlook Web Access account.
Log into the Outlook Web App with your email and password.
OWA login page. Click on the gear icon and click on the options.
Under My Account click “edit information:”
Update the field you would like changed and click the save button. This information will propagate in the Global Address Book.