When system designers, developers, and programmers shape human – machine interfaces in automated manufacturing systems (AMS), they will to a large extent define working conditions for future operators. To be able to shape systems in such a way that both human and technical resources are combined and used in an optimal way, a thorough understanding of the balance between technical and human aspects is needed. This paper suggests that continuous present-state analyses together with scenario development is an approach to integrate human aspects continuously in the development process. Three case studies that focus on detecting and solveing existing problems as well as forseeing and preventing problems in new and redesigned systems are described. Results show that dynamic AMSs require procedures and support systems also for interventions, not only for the normal production, as these activities become more and more frequent. Both in terms of troubleshooting and maintenance and in terms of information to all involved when changes are taking place. The results also indicate that the suggested approach is useful for the difficult goal.