This document discusses how to establish a co-designing culture within public sector organizations. It explores how capacity building programs can support such a culture through customizable learning formats, outcome measurements, and spread strategies. A co-designing culture involves structures, experiences, and values that enable participation from all stakeholders. Tensions can arise when a co-designing culture challenges an organization's dominant culture. Strategies like horizontal and vertical synergies within and between cultures can help build design capacities. The goal is for organizations to function as diverse, coexisting co-designing cultures.