There are two methods of adding a new appointment to a calendar. To add one so that it shows up in My Calendar, use the New Appointment link in the left menu under Calendars.
If you wish to add an appointment to a shared calendar , you must be viewing the calendar, then use the New Appointment button from within the page.
For information about inviting attendees, please refer to the help topic Inviting Attendees.
Event
The event tab records the common information about the appointment. Usually, this tab is the only one you will use. The available settings are explained below.
Subject - This is the short description of the appointment, and is what will appear on calendar pages and reminders.
Location - The physical location of the appointment. This field is optional.
Start Date and Time - Enter the start date of the event. If the event will go all day, check the "All Day Event" box.
End Date and Time - If the appointment does not have a scheduled end time, you may leave the end time blank.
Reminder - For more information about reminders, please see the help topic Reminders.
Event Description - Enter the full description of the appointment, if needed.
Recurrence Information
A recurring appointment is one that will happen again at some future date, and usually follows a pattern. A good example of a recurring event is a birthday. For more information about this, please refer to the help topic Recurring Events.
Categories
You may select which category the event should belong to or uncheck them all to specify an event with no category. To add a new category click on the Master Categories button to bring up the categories popup You may add categories by either using a comma(,) to separate them or putting one category per line.