You can have up to 9 different items on your graph, each represented in an interval, when using several items, it is recommended to make this graph a stack graph so values are easy to read.

For each graph item, you can associate a hot link which triggers a hot graph when a right click is performed on  a graph item when the graph is displayed, this is a highly interactive feature which allows you to show Top 5 type of information, e.g. a right click on Interactive CPU could trigger the Top 5 CPU consuming Interactive jobs. For more information on this feature, see Hot Links.

In addition to standard graph items, you can define one of those values as an overlay. An overlay will use a different scale, which is useful when displaying values having different unit of measures, e.g. CPU in percentage and Response Time in seconds.