In the calendar views you can use drag and drop to:
move an appointment to another day
change an appointment's time
change an appointment's start or end
Prerequisite: You have the appropriate permissions to modify objects in the folder containing the appointment. Depending on the server configuration, you can only edit an appointment in your private calendars if you are the appointment's organiser.
How to move an appointment to another day:
Select one of the following views:
, or .Select an appointment.
Drag the appointment to another day.