Creating a group in Workspace gives you a dashboard showing the status of each group member on any given day, and you can book desks on behalf of group members to make sure everyone is in the office at the same time.
Follow these steps to join a group.
Open Workspace and sign
Click the Groups icon on the bottom menu
Click the orange plus symbol in the bottom right corner
Choose Find existing group
Use the search function to find the group you want to join