Scenario #1:
You are the calendar administrator for the Mechanical Engineering department. You have been using the calendar system for a few months, and subscribe to events from many different calendars. You have chosen to manually approve all events that you subscribe to before posting them to your calendar. Today you are logging in to review new events that came in over the weekend.
Scenario #2
You are the calendar administrator for the Mechanical Engineering department and need to add a new event to your calendar and change the background color of your calendar.
Scenario #3
You are the calendar administrator for the Biology department and have been using the system for a few weeks, but so far only for your department's own events. Today you want to start adding some other campus events to your calendar.