Shape-changing interfaces is an emerging field in HCI that explores the qualities of physically dynamic artifacts. At furniture-scale such dynamic artifacts have the potential of changing the ways we collaborate and engage with spaces. In- formed by theories of proxemics, empirical studies of informal meetings and design work with shape-changing furniture, we develop the notion of proxemic transitions. We present three design aspects of proxemic transitions: transition speed, step- wise reconfiguration, and situational flexibility. The design aspects focus on how to balance between physical and digital transformations in designing for proxemic transitions. Our contribution is three-fold: a) the notion of proxemic transitions, b) three design aspects to consider in designing for proxemic transitions, and c) a novel prototype of shape-changing furni- ture, which allows for gradual transitions between a table and a board surface. These contributions outline important aspects to consider when designing shape-changing furniture.