If you are the only person on the ticket (or you and your family) then you should be able to contact the airline directly and do it yourself.

However, if the comany has booked several employees at the same time, this may not be possible.

Finally, some companies ask the airline to prohibit changes to the ticket to prevent people using the ticket to go elsewhere and then not actually coming to Doha at all (yes, I have actually known that to happen), so it's best to check with your company if the airline do not allow you to change it. They may ask for details about where you are going and why etc.

Good luck,
Jayne