Rate and Comment on Content Items
In order to rate and comment on content items, Comment and Rating need to be enabled for the specific content.
While viewing a content item and to add rating to it, click the number of stars in the ribbon.
To add a comment, click Add Comment in the ribbon or scroll down to the bottom of the page.
Enter your comment in the Add New Comment box and click Add Comments.
The page you are trying to view has expired and is no longer available for viewing.