Overview
This article explains how to share calendars with other users using Microsoft Outlook running on Microsoft Windows.
Method
Please note that the screenshots below were taken using Outlook 2013. The layout for Outlook 2007 or Outlook 2010 will be similar.
1. In Outlook, go the Calendar section

2. Click on the Share Calendar icon in the top toolbar. This will open a Sharing Invitation message

3. Add the users you wish to share the Calendar with using the To button
4. You may change the authority (or permissions) of a recipient (a shared user). The available authorities are:
- Availability Only
- Limited Details
- Full Details
You may also add a message to your invitation prior to sending. For example: Here is my shared calendar.
5. To complete the sharing, click on the Send button.