Select a scenario, and then, in the workspace, select the Risks tab.
The Risks section appears, displaying a list of available risks.
Select the Risk to which you want to add existing planned resource usage.
The risk is highlighted.
In the Risks section, in the grid, in the row containing the Risk to which you want to add existing planned resource usage, select the link in the Planned Resource Usages column.
The Planned Resource Usages subsection for the selected risk opens.
Select
The New Resource Usage from Existing Resources window appears.
Select Finish.
The new resource appears in the Planned Resource Usages subsection.