How you share a calendar in the web client is different from how you share a calendar in outlook. If you wish to see the share in Outlook and the web, you need to follow both procedures.

Assumes person A is sharing to person B

To share through the web client

• Login to person A's web account.
• Click the calendar tab to go to the calendar.
  
• Right click on the calendar you wish to share and select share.
• select person B and select their role. Click ok.
  

To access a share in the web client

• Login to person B's web account
• Go to their inbox and click on the e-mail from person A notifying about the share.
• Accept the share.
• Person B will now have a copy of Person A's calendar.

To share a Folder in Outlook

• Open person A's Outlook account
  
• Right click on a folder and select properties. Select the sharing tab. select person B and select their role. Click ok. The next sync will set the permissions on the folder on the server

To access a shared folder in Outlook

• Open person B's Outlook account
  
• File->Open->Other users mailbox and select the user that has shared a folder with you.
•  A new folder hierarchy will be added for this user and all the contents they have shared with you will be available.

To share a calendar in Outlook

• Open person A's Outlook account
• Right Click on the calendar - Select Properties - Click on the sharing tab

To access a shared calendar in Outlook

• Open person B's Outlook account
  
• Go to calendars - click on the 'Open a shared Calendar" link to mount a shared calendar.

Note: If you are able to read all the contents of the mailbox even though only the calendar was shared to you, you are probably an admin on the server. we're modifying this behavior in a future release so even though you are an admin only data explicitly shared with you is viewable.