How to Unshare Your Calendar
Calendar sharing is a feature offered in Microsoft Office Outlook 2007. This feature allows users to share their Outlook calendars with multiple email contacts. This is convenient for business-related matters and group scheduling. Outlook Office 2007 has a simple interface making it relatively easy to use. With just a basic knowledge of the program, you can easily unshare your calendar if you do not wish to share it anymore.
Open up Office Outlook 2007 on your computer.
Select "Calendar" in the navigational panel located on the left side of the screen.
Right-click the calendar under the "My Calendars" heading that you wish to unshare and select "Change Sharing Permissions".
Select the "Permissions" tab in the dialog box and select the names of the contacts with whom you want to stop sharing the calendar.
Click "Remove" and then click "OK" to save your settings and close the dialog box.