You can quickly modify an appointment's date and time by using the drag and drop features. You can also duplicate appointments, which saves you from having to create another from scratch.
Note: These features are only available from the Day and Week views. Your default calendar view can be changed at any time in your Calendar Settings.
To use these features:
From the Main Menu bar, click Calendar.
From the Calendar view, navigate to the day/week that contains the activity you want to change.
Move an appointment earlier or later in the day by clicking and dragging the activity up or down the page. (Day and Week view only)
Move an activity to a different day in the week by clicking and dragging the activity into another day column. (Week view only)
Adjust an appointment's start and end time by clicking and dragging the top and bottom edges of the activity. (Day and Week view only)
Copy an appointment by holding down the CTRL key on your keyboard while clicking and dragging it to the desired location. (Day and Week view only)