Symptoms

From SharePoint webpart, where the user can see information about the instances completed. For example the past friday 20 the user Carlos completed 3 activity and the next monday all instance was completed. How Carlos, today, can see what happened with this instances? using the SharePoint webpart.
 

Diagnoses

While the worklist web part doesn't provide this functionality, we can create our own worklist using smartforms.
 

Resolution

Create a form or view using the system and reporting smartobjects to display this information, then use the K2 Form Viewer web part to display.