Calendar Visualization to indicate Almost Full - Light blue color on Group's view of Events is a new visualization to indicate events or shifts that are >80% registered.
Default Event View- This setting allows administrators to toggle which default view users see when they land on the event page. Options are List or Calendar view.
To configure this, edit an event, go to Settings, and find "Default Event View" and make your dropdown selection. This will default to showing the list view.
Guest Impact - Allow members of the community to add impact easily without needing to log in. If prefer not to allow guest users at all, navigate to your Group Dashboard, Customize > Impacts > Group Settings > Allow Guest? > and set to No.