Creating a Use Case Association

You can create use case association from the Toolbox, Browser, or Model menu.

Use the Use Case Association tool in the Toolbox.
Select Model > Associations to access the List of Associations, and click the Add a Row tool.
Right-click the model (or a package) in the Browser, and select New > Association.

For general information about creating objects, see Core Features Guide > Modeling with PowerDesigner > Objects.