Honestly I think it varies incredibly by aircraft (that may change..) but a google search gives some ideas, but seems fairly economy focused:
https://www.google.com/search?q=qata...s+class+images
Take a look here for details a bit as well, weight limits are designed for pretty young kids, so if you have twins it could work, if one of the kids is over a year old, unlikely to be super helpful:
https://www.qatarairways.com/en/fami...-on-board.html ...
Originally Posted by Qatar
*Qatar Airways provides bassinets for infants. Please contact your nearest Qatar Airways office to request bassinet seats. Please note that the maximum body weight of the infant should not exceed 11 kgs (24 Lbs) and the age must not exceed 24 months. Additionally, the infant must fit within the confines of the baby bassinet.
*Bassinets are not available in the First Class cabin on-board the Airbus 380. To check availability of a Bassinet position seat on a specific aircraft and within a particular cabin, please contact the nearest Qatar Airways office.
I've found from my own (limited due to COVID) experience bassinets are only useful up to about 6 months with typically sized babies... After that it seems that sleeping in the bed seems a better plan