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1. Open Outlook.
2. Click on Calendar.
3. Click Calendar Permissions from the top ribbon.
4. Click Add button and enter the person's name with who you wish to share your calendar.
5. Click Add, then click OK.
6. Define permissions for the user by choosing a Permission Level from the dropdown menu and click OK.
7. The new contact person will receive an email inviting them to add the shared calendar.
8. The new contact person can also open their Calendar, click Open Calendar, then choose Open Shared Calendar.
9. The shared calendar will now show in the list of Shared Calendars in the left sidebar menu.
10. The new contact person can also follow the steps above to share their calendar.