You can add various types of items to your Microsoft Outlook calendar, including:

  • Appointments. An appointment typically just involves you and one other person. For example, you set appointments with your doctor or accountant. Often (but not always) an appointment is set with someone outside your organization.
  • Meetings. A meeting usually involved a group of people. If you’re the meeting organizer, you would be responsible not only for scheduling the meeting but also for sending out meeting invitations.
  • Tasks. A task is a time you block off on your calendar to meet certain goals and assignments.

You can also set any item to be a recurring item or a multi-day item.