Main purpose is to create Adhoc reports on the fly.
Notes from whats new in qlikview 11 app for conditional enable and disable.
Depending on the user, you may want to show or hide certain dimensions or metrics. In QlikView 11, developers can define when to show/hide dimensions and metrics. This is useful when you wish to show one metric at a time also. See Dashboard for this example.
If you would like end users to create their own table to display the data, you may use this feature to dynamically add/remove dimensions or metrics. See Report sheet for an example.
