Despite their collaborative intentions, co-design workshops usually pivot on expert facilitators. They select methods that move participants toward an agreed-upon goal. This can impose high demands on them and it risks marginalizing the contribution of participants in what should be a joint practice. With a focus on the unfolding interactions between organizers and participants, the article reflects on an adaptation of the Tiles IoT toolkit. We propose a repertoire of ten general situational moderation actions with which those involved attempted to influence the process and the conditions of workshop participation. Zooming in on ad hoc forms of moderation prompts us to acknowledge that methodical choices and social activity intertwine. From this, we draw three lessons for facilitators: plan for adaptability, establish responsive relationships, and promote reflexive engagement. The full article can be read here.