Uncertainty is a fundamental part of planning. However, the long planning cycles of regional planning in Germany make it even more difficult to steer regional development in times of rapid change. With this case study from the Leipzig (Germany) region, we would like to explain the procedure in the research project StadtLandNavi. Based on a scenario-based approach, we want to show how decision processes can be supported. As a central tool, a monitoring system will be used to dynamically track the development of individual scenarios and to react to emerging changes. A main focus is the development and stabilization of the technical and administrative system, which is necessary to steer the process outside the planning cycles.