
To edit multiplicity of an association end, right-click near the association end, select Multiplicity from the popup menu and then select a multiplicity. Enter its name and press Enter to confirm editing. If you are creating a new class, you should see the class now and it is connected to the source shape.If you want to create an aggregation or composition, select Aggregation -> Class or Composition -> Class instead. If you are creating a new class, select Association -> Class from Resource Catalog. If you are connecting to an existing class, select Association from Resource Catalog.Otherwise, drop an the empty space (either at the diagram background or container shape like package). If you want to connect to an existing class, drop at that class. Release the mouse button at the place where you want the class to be created.Press on the Resource Catalog button and drag it out.Move your mouse pointer over the source shape.

To create an associated class in a class diagram: To create a class in a class diagram, click Class on the diagram toolbar and then click on the diagram. The Location field enables you to select a model to store the diagram.

Perform the steps below to create a UML class diagram in Visual Paradigm. Since it provides detailed information about the properties and interfaces of the classes, it can be considered as the main model and regard the other diagrams as supplementary models.

A class diagram is a kind of UML diagram that shows the objects that are required and the relationships between them.
