Chapter 19 opens by asking readers to reflect on prior collaborations, writing down their views on what makes people easy to work with and what makes them hard to work with. The chapter argues for a team-based approach to public engagement, and suggests ways to build effective teams. Also, it’s important to trust our partners at informal learning venues, as they have expertise on the audiences and logistics in these settings. Emphasizing that communication with these partners is still a conversation, the chapter returns to the principles of a successful conversation described in Chapter 3 and unpacks each one with reference to venue partners. A case study exemplifies these points, describing a partnership between university students and faculty and museum professionals. Details are given of negotiation about institutional missions and daily operations through to a demonstration on children’s science practices in a game about vowel sounds. This chapter’s Closing Worksheet asks readers to make a detailed plan for getting their demonstration into a specific place or event.