The risks tab helps you proactively identify risks to your project.
Risks are shown for the selected branch of the work item hierarchy. If you have View Full Status permissions, you will see risks for all users and user groups. You may filter the risks displayed by minimum severity and when the risk was identified.
The display of certain types of risks may be configured in your User Options.
To receive the most useful information you should create assignment and estimates for work items.
Tutorial: Adding assignments
Tutorial: Configuring status options