Designers and service providers are working together more closely in Service Design projects, using a collaborative approach to create innovative services. This relationship is different from traditional client relationships because it is dynamic, focuses on the process of innovation, and often starts with vague ideas. Designers face challenges in convincing service providers of the benefits of collaboration, as providers are unfamiliar with this approach. The goal is to develop a design intervention that encourages effective collaboration between designers and service providers in Service Design projects.