Organization's management system consists of various structural elements. From the position of the functional approach, the structural unit of management activity is functional task management, the realization of which in the course of activities designed control technology. Functioning of many systems management processes and sub-processes is considered. A typical implementation of this act is to solve the set of specific management tasks to achieve the desired goal of a fixed initial situation. The contemporary development of organizations is determined by the necessity to respond to the current challenges and the market trends. In order to react adequately, it is important to use effective means to rebuild the systems of managing the economic systems referred to as organizations. We present a model of organization management system (OMS), and a model of development of organizational processes management system. We review the stages of the said models, including both the conceptual and the technological aspects of organization development based on reengineering. We emphasize the basic advantages of the described models.