Criteria only applies to Historical Graphs and is optional. You can apply a criteria to your graph and select specific components such as users, jobs, memory pools, disk units, ... to appear in the graph. 

You can select specific components such as users, jobs, memory pools, disk units, ... to appear in the graph. This feature allow you to focus on only certain parts of your environment and is very useful in isolating components on which you might want to focus.

You can use the breakdown options to define how the selected components should be represented on the graph when displayed.