Modelling and analysis is supported best done sign the physical modeller, what design code/requirements are you looking for?
Modelling and analysis is currently supported. If you are looking for the design of flat slabs in the Advanced Concrete Design, I would recommend that you post this in the ideas forum an get your colleagues to vote on it so that the most popular requests can get a better chance to become a future feature.
Seth Guthrie
Carlos Aguera
Abhijeet Gundaye