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check ticket statusShare your calendar in Outlook - Microsoft Support
Old Outlook Version:
Note: New Outlook version instructions found further down this page.
In Calendar, click Home.
In the Manage Calendars group, click Add Calendar, and then click Open Shared Calendar.
If you don't see Add Calendar, at the right end of the ribbon, select Add > Open Shared Calendar.
Type a name in the Name box, or click Name to select a name from the address book.
The shared calendar appears next to any calendar that is already in the view.
After you access a shared Calendar for the first time, the Calendar is added to the folder pane. The next time that you want to view the shared Calendar, you can click it in the Folder Pane.
If the other person whose Calendar you want to open hasn’t granted you permission to view it, Outlook prompts you to ask the person for permission. If you click Yes, a sharing request email message opens automatically. The message requests the person to share his or her Calendar with you and also provides the option to share your default Calendar with him or her.
Add Shared Calendar in New Outlook Version
Go to Calendar Tab in Outlook. 
Click on Add Calendar: 
Click on Add fromom Directory:
Click on the drop-down box and select your email address:
Type in the person's email address that is sharing the calendar with you and select their email address.
Then click on Add.
Tip: You can quickly schedule a meeting with people whose calendars you can view. Select multiple calendars, and then click Home. In the New group, click New Meeting, and then click New Meeting with All.
