You can attach one or more requirements to an object using the Requirements tab in the object property sheet. This tab is not displayed by default, and can only be used if one or more requirements models is open in the workspace.
Note: To display the Requirements tab, select Tools > Model Optionsand select the Enable links to requirements option.
Open the object's property sheet and click the Requirements tab.
Click the Add Objects tool to open a selection dialog.
Select a Requirements model and, optionally, a package to display a list of the requirements contained therein.
Select the requirements that you want to attach to the object and click OK.
The selected requirements appear in the Requirements tab.
[optional] Select the requirement in the list and click the Properties tool to open its shortcut property sheet. To open the property sheet of the requirement itself, click the Target Object Properties button to the right of the Name field.
Note: To access the property sheet of the requirement directly instead of passing by the shortcut, select Tools > General Options > Dialog, and select the Target Object radio button beside the External Shortcut option.
Click OK to close the property sheet and return to the model.