We are in a world facing numerous systems transitions. From hierarchies to networks and sociocracies. From office-based to a global and mobile workforce. From a human resource era to a co-dependent AI/VR/robotics era. From patriarchy to equity-based systems. We are in the midst of major shifts and transitions as we live through the global COVID-19 pandemic and the anti-racism movements sweeping the globe. So, what is the grey zone of change? I define the grey zone of change as the space in-between systems - between the from and to of transformational change- that is undefined and unknowable. Systems may be worldviews, philosophies, organization transformations, methodologies or social systems. This guidebook is about living, leading and facilitating transformations in this context.