Understanding of business processes is becoming an important key factor for successful businesses and today many organizations are facing the lack of knowledge about the business processes that they are working on. Since the interaction between different business processes and different actors are becoming more common it is not only enough for employees to have knowledge about the business processes that they involve directly, but also they need to know about the other business processes in the organization. Unfortunately there is not enough research on this topic in the literature and the goal of this thesis is to propose a method for solving the indicated problem by increasing the understanding of business processes by the employees in an organization. The proposed method basically contains the design and execution of process models based on a real scenario. A case study has been conducted at an IT company where the employees have no or limited knowledge about the business processes that their organization works on. Even though the method has been only tested in one organization it is generic and can be applied to any other similar organization. The design science approach is used to develop the method and build the process models as artifacts. The process models have been verified by using an executable business modeling tool, iPB, and presented to the employees in a seminar in order to make them to understand the business processes better. The knowledge of the employees about the business processes has been analyzed before and after the presentation, thus we could compare the results and find out how much their knowledge has increased after the presentation. The results have shown that the knowledge of the employees has increased significantly. In conclusion, the method of design and presentation of executable business process models has been proved to be a solution to the problem of not understanding of business processes in an organization well enough.