1. Open Entourage.
2. Click Calendar in the upper left corner of the window.
3. Right click (Ctrl-click) on your Exchange calendar in the list on the left.
4. Select Sharing from the pop-up menu.
5. Click Add User.
6. Type the name of the person you want to share your calendar with, and click Find.
7. Select the name from the search results and click OK.
8. Select the name you just added. Right now, the Permission Level is None.
9. To change it, click the Permission Level: drop-down menu. Reviewer and editor, two common permission levels (types of sharing), are described above.
10. Finally, click OK.