UML Modeling Techniques > Activity modeling > Activities > Creating an activity
Creating an activity
You can create an Activity through a Class Diagram or a Modeler pane.
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When you create an Activity from a Class or Interface, Modeler also creates an Activity Diagram as a child of the new Activity.
To create an activity through a class diagram:
1. On the Class Diagram tab, click the Activity button, and then click on the diagram in free space.
2. Type the name of the Activity, and then press the Enter key.
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On a Class Diagram you can show an Activity call tree through composite aggregation symbols. See Showing an activity call tree on a class diagram.
To create an activity through a Modeler pane:
1. Locate the item that is to own the Activity, that is, an Activity, Actor, Basic Type, Class, Interface, Model, Package, Operation, Type Definition and Use Case.
2. Right-click the owning item, and select New > Activity.
or
Select fNew > UML > Behavior > Activity.
3. Type the name of the Activity, and then press the Enter key.