What's the relationship between task structure and resource structure?

The task and resource structure regions share a master-detail relationship.

The Analyze KPI page lets you select which structure appears in the master and detail regions. Depending on your selection, the detail structure region automatically displays the other structure. For example, if you select the task structure to appear in the master region, the detail region displays the resource structure. Selecting a row in the Task Structure region displays the assigned resource for that task in the Resource Structure region.