Assaf, RodrigoMendes, DanielRodrigues, RuiAristidou, AndreasMacdonnell, Rachel2024-04-302024-04-3020241467-8659https://doi.org/10.1111/cgf.15066https://diglib.eg.org/handle/10.1111/cgf15066Collaboration in extended reality (XR) environments presents complex challenges that revolve around how users perceive the presence, intentions, and actions of their collaborators. This paper delves into the intricate realm of group awareness, focusing specifically on workspace awareness and the innovative visual cues designed to enhance user comprehension. The research begins by identifying a spectrum of collaborative situations drawn from an analysis of XR prototypes in the existing literature. Then, we describe and introduce a novel classification for workspace awareness, along with an exploration of visual cues recently employed in research endeavors. Lastly, we present the key findings and shine a spotlight on promising yet unexplored topics. This work not only serves as a reference for experienced researchers seeking to inform the design of their own collaborative XR applications but also extends a welcoming hand to newcomers in this dynamic field.Attribution 4.0 International LicenseCCS Concepts: Human-centered computing → Mixed / augmented reality; Virtual reality; Collaborative interactionHumancentered computing → Mixed / augmented realityVirtual realityCollaborative interaction10.1111/cgf.1506613 pages