Our research is based on the air traffic control activity regulation assistance. It aims at integrating the two levels of the air traffic control organization: a tactical level managed by a so-called radar controller and a strategic one managed by a so-called organic controller. Concerning the tactical level, our research is directed toward a "horizontal cooperation" that consists in a dynamic allocation of control tasks between a human air traffic controller and an assistance tool. Regarding the other level, it is oriented toward a scheduling module in order to improve the initial allocation policy.