One of the newest futures of Exchange Server 2010 is ECP (Exchange Control Panel). Users can manage their Active Directory attributes on Outlook Web App (Outlook Web Access). Besides, User can add their names to some groups or remove from groups. All these features are controlled by new security feature called RBAC – Role Base Access Control – Administrators of your organization c an decide that which user can change which fields.
When you open the OWA, click on option
You are in the option tab and then click on Edit
Let’s change the attributes