This function allows you to view the “sleeping” tasks for all or selected process instances of the selected process definition. 

On the Process Definition page, select the process from the table, then click the View > Process Task View menu option.

The Process Task View opens on a new page. It displays tasks from all sleeping instances of this process definition in a table. Use the Select Instance drop-down list to view specific tasks, and use the “Search” box to filter the results.