Coordination is a key issue in the design of organizational structures and processes. In traditional design methods, a way of modeling that captures both inter actor communication and dynamic aspects, is lacking. Based on the dynamic modeling approach, we propose a body of concepts that meets these two requirements. We use a case study to introduce and illustrate these concepts. Furthermore, we formulate a way of transforming these concepts into a simulation model. We conclude by stating some unsolved problems and directions for further research.