Visit the website of IOM:
Email IOM office: firstname.lastname@example.org
If you do not receive the email response from OSU then include their Head office email i.e. email@example.com :-).
They will connect you to your local office. Call them and asked the ticket information.
As per my experience "If you will buy the ticket from IOM they will give you 20% discount in the air-fairs per ticket and each passenger will be allowed to carry 40Kg luggage without extra charges".
So you can email them and they will connect you with your local IOM office and I am pretty hopeful that they will guide you accordingly. And as you know luggage carrying limit is mentioned on the ticket therefore airline can not lie you.
You can get this discount through IOM and they will give you the bookings for Emirates Airlines. There are two en-routes:
preferably most of the tickets are booked for Emirates Air lines, this one time facility is for all the family members either they are flying together or separately.
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