How to change your address book to list by LastName, FirstName
By default, Outlook will your Contacts List asFirstName followed by LastName. You can change this to LastName followed by FirstName.

Go to Tools and select Account Settings…

Now choose the Address Books tab and select the address book you want to change the format of then click the Change button.

Now change the Show Names By field to File As (Smith, John) and close the window. Then close the next window.
After you have made these changes, you must close and reopen outlook for them to take effect. Your contacts will now show up in your address book by last name followed by first name.
Click here to access more knowledge base articles.
You can always call the Help Desk if you have questions: 724-552-2500.