RE: CALENDER
Hi Emma
Presuming you are using Outlook 2003 in an Exchnage environment, you can do the following:
On the <Go> menu, click <Folder> List (Folder List: Displays the folders available in your mailbox.
Click the plus sign (+) next to the folder, to view subfolders. If the Folder List is not visible, on the Go menu, click Folder List.), right-click the private or public folder you want to share, and then click Sharing on the shortcut menu.
NOTE: You must have Owner permission for a public folder to set sharing permissions for the folder. You can set permissions for only one folder at a time.
Click the Permissions tab.
Click Add.
In the Type name or select from list box, enter the name of the person you want to grant sharing permissions to.
Click Add, and then click OK.
In the Name box, click the name of the person you just added.
Under Permissions, choose the settings you want.
Hope this helps.
Jacob