Guide on how the Delta Airlines Manage Booking section is used?

http://jeffreyfzub507.cavandoragh.org/what-are-the-steps-of-changing-flight-tickets-with-delta-manage-booking-section

What is the process of flight changing with Delta Airlines Manage Booking section? Delta Airlines is one of the largest airlines and traditional carriers in the United States. It is headquartered in Atlanta, Georgia.