1.  On the Navigation Bar, click People.
   
   
   
   
2. In the ribbon, in Current View, click Business Contact.
   
   
   
   
3. Within the contact listing, double-click on the contact you want to update. The edit contact window will be displayed.
   
   
4. Make the desired modifications and click Save & Close from within "Actions" group.
   
   
   
   

Note: if the contact is within a group, use these instructions to modify the contact.