Yeah that I know but how many miles or charge ? Coz would need to transfer miles accordingly and need that much buffer of miles.Yes. You need to make booking with award seats using miles. Once done, call them and ask them to add Infant to this booking. They will then either ask you to pay additional money or deduct additional miles or combination of both. This process works only for booking via miles.
This will however not get you additional seat as Infants do not get it, but you can get some preference in seat selection in forward zone and be able to select bassinet seats