Editing Permission and Sharing Calendars in Outlook
The instructions listed below will show you how to share your Outlook calendar and edit its permissions.

To Share Your Calendar:
1.    Open your calendar and click the Share Calendar button in the home ribbon. Select the calendar you want to share from the drop-down menu.

2.    Click Add.. and select the people you want to share your calendar with from the Address Book.
3.    For each person you’ve added, highlight them, and click the corresponding check box in the Permissions area below to assign them those permissions.

4.    When you’re finished, click Apply. Those that you granted permission to will receive an email inviting them to open and view your calendar.

To Open the Permissions Dialog:
1.    Open Outlook and navigate to the Calendars section of the application.
2.    Right Click on the Calendar name you wish to edit. Select Properties from the drop-down menu. 

3.    In the dialog box that opens, click the Permissions tab.

To Edit User Permissions To Your Calendar:
1.    Open the Permissions Dialog using the steps above.
2.    Locate and select the User for whom you wish to grant calendar access.
3.    Ensure that any new users are highlighted in the list. Select the desired Permissions in the box below.
4.    Click Apply and OK

To Remove Users:
1.    Open the Permissions Dialog using the steps above.

2.    In the top box, click the User you wish to remove.
2.    Click the Remove button. You may complete this step to remove multiple users.
3.    Click Apply. Click OK.