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) Main Menu
A red dot will appear on the 
Main Menu icon.
3) 'Feed' section below calendar view OR Feed tab
You will find all changes made to your comments, shared calendar, and events in your Feed section. Scroll down from the calendar view to see changes OR select the Feed tab under the calendar view.
