You can make changes to your tickets using the Manage Booking option, such as changing the name or correcting it, changing the flight date or time, or upgrading your seat or meal. Under the Qatar Airways manage booking policy, you may manage your Qatar reservation free of charge, if you make changes within 24 risk free period. You may connect the Qatar Airways representatives, if you ned to know more about the manage booking.
https://flightcancellationpoli....anage-booking-policy