Together with researchers from the Newcastle University (Anna Vasilchenko), the Dutch National Research Institute on Mathematics & Computer Science (Jie Li), the University of Tsukuba (Bektur Ryskeldiev, Sayan Sarcar & Yoichi Ochiai), the Keio University (Kai Kunze) and the Harvard University (Iulian Radu), we are organising a Special Interest Group at ACM CHI2020. In this SIG, we aim at gathering researchers and practitioners to reflect on using XR technologies to support co