You can set reminders for your appointments, each of which can display a desktop message,and you
can add a additional notify,such as play a sound, run a program or show web page or shut down computer.

You can Schedule your reminder in one of six different ways:

OneTime: Creates a unique, one time reminder.

Hourly: Repeats a reminder every hour.

Daily: Repeats a reminder at a specific daily interval, or every weekday.

Weekly: Repeats a reminder on specified days at a selected weekly interval.

Monthly: Repeats a reminder on either:
a specified day of the month, at a specified monthly interval; or a particular week, on a specific day of the week, at a specified monthly interval; for example, the first Thursday of every three months.

Yearly: Repeats a reminder on either: a specified day of a specified month; or a particular week, on a specific day of the week, of a specific month; for example, the second Wednesday of July.