The World Café method is an explorative research method that includes elements of participatory and qualitative research and is suitable for design science. The iterative approach and usage of the wisdom of the crowd enable researchers to collect data in small and large groups in a cost- and time-efficient way. However, researchers lack guidance on how to scientifically conduct the method from a process perspective and what they can do to improve the quality of the data collected. Regarding that last perspective, the table hosts play a crucial role. To solve this, we designed a Three-Phase Blueprint of the World Café method, which includes a three-step instruction procedure for preparing the table hosts. This instruction is an artifact that we tested and evaluated for its effectiveness.