Traditional models of slideware assume one presenter controls attention through slide navigation and pointing while a passive audience views the action. This paradigm limits group interactions, curtailing opportunities for attendees to use slides to participate in a collaborative discourse. However, as slideware permeates contexts beyond simple one-to-many presentations, there are growing efforts to shift the dynamics of collocated interactions. Technologies exist to shift the one-to-many information control paradigm to variations that extend functions to multiple attendees. But there is limited detailed research on how to design such multi-person attentional control and facilitate collocated interactions without disrupting existing work practices. We report on a detailed naturalistic case of using presentation in a design meeting, where participants used Office Social, an experimental slideware technology that enabled open access to shared interaction with slides across multiple devices. We explore how the design of Office Social supported informal collaboration. Our video-based analysis reveals how the orderly structures of conversational turn-taking and bodily conduct were used in conjunction with the affordances of the socio-technical ecosystem to organize collective activity. We suggest that supporting collocated interactions should take account of the existing conversational methods for achieving orderly collaboration rather than superimposing prescriptive technological methods of order.

传统的幻灯片软件模型假定一位演示者通过幻灯片导航和指向来控制注意力，而被动的观众则观看动作。这种范例限制了小组之间的互动，从而减少了与会者使用幻灯片参加协作性讨论的机会。但是，随着幻灯片软件渗透到简单的一对多演示之外的上下文中，越来越多的人努力改变并置交互的动力。存在将一对多信息控制范例转变为将功能扩展到多个参与者的变体的技术。但是，关于如何设计这种多人注意力控制并促进并置交互而不破坏现有工作实践的详细研究有限。我们报告了在设计会议中使用演示的详细自然主义案例，参与者使用了Office Social，这是一种实验性幻灯片软件技术，能够对跨多个设备的幻灯片进行开放式共享访问。我们探索Office Social的设计如何支持非正式协作。我们基于视频的分析揭示了会话轮流和身体行为的有序结构是如何结合社会技术生态系统的能力来组织集体活动的。我们建议，支持并置的交互时应考虑到现有的会话方法以实现有序的协作，而不是叠加规定的命令性技术方法。我们探索Office Social的设计如何支持非正式协作。我们基于视频的分析揭示了会话轮流和身体行为的有序结构是如何结合社会技术生态系统的能力来组织集体活动的。我们建议，支持并置的交互时应考虑到现有的会话方法以实现有序的协作，而不是叠加规定的命令性技术方法。我们探索Office Social的设计如何支持非正式协作。我们基于视频的分析揭示了会话轮流和身体行为的有序结构是如何结合社会技术生态系统的能力来组织集体活动的。我们建议，支持并置的交互时应考虑到现有的会话方法以实现有序的协作，而不是叠加规定的命令性技术方法。