When a member of your calendar adds or edits an event or a comment, you can find the changes made in the following three places.
1) A red dot will appear next to the calendar that has been changed/edited/updated.
2) A red dot will appear on the Main Menu icon.
3) "Recent changes" section below the calendar view
You will find all changes made to your comments, shared calendar, and events by scrolling down the calendar view.