To define a notation:
1. Right-click the
2. In the shortcut menu, select Add > Notation.
Alternatives: This operation is also available from the XMLSchema > Diagram > Add > AttributeGroup menu and from the Add button .
The new notation is added to the XML Schema. It is displayed in the diagram and in the text pane (if you have it open). The properties for the new notation are displayed in the Properties window.
3. Specify the details of the notation node in the Properties window.