Regardless of the range of linguistic and communicative resources available to people, their life-worlds are embedded within complex, semiotically-rich environments in which they organise themselves into collaborative activities. They dance together, or read or cook together; they go shopping or visit the cinema; they play board games, or play in a band; they take art classes, or play a team sport; they work together. Particular social activities can present some members with additional challenges, excluding them from active participation due to the performance demands or complexity of the activity. But activity frameworks can also provide members with important organisational routines, templates that support and underpin people’s social engagement with one another. Such activity frameworks can be sufficiently stable to permit divergence from the normative patterns of being, inviting play and creativity to emerge, endorsing atypical patterns of expression and mutual engagement. We invite presentations that help us reflect on the centrality of situated activities in the organisation of members’ engagements with one another.