Outlook—Calendars, tasks and address books
You can share an address book, calendar, or task list by following this tutorial. The first step is to open outlook and select the item on the left that you wish to share. In this example, we will share our calendar but the process and options are the same for tasks and the address book.

Select Share My Calendar
Now, enter Tony Krance into the recipients field and check either or both of the boxes to allow the other person access to view your calendar and/or request permission from the other person to view his calendar.

When you are ready, send the request by clicking the send button. If you are giving another person access to your calendar, he will see it immediately in his calendar view. If you are requesting to view someone else's calendar, you will not see it until he accept your request.
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