title: Different user permisions for different sites on sharepoint
body: <p><a href="http://img21.imageshack.us/img21/3262/snapshotosz.png" rel="nofollow noreferrer">alt text http://img21.imageshack.us/img21/3262/snapshotosz.png</a></p>
  
  <p>I want to add a new tab or site in sharepoint as shown for the above, but i want to allow some users to access one of them and not the other. when i remove a user it is removed from both of them or put for all.
  Also how can I edit those of the one which is already done?</p>