- Open the IDE Settings, and under the IDE Settings, click Diagrams.
- In the Diagrams page of the Settings dialog box, choose node you want to configure settings for, and then select the check boxes to define the elements to be shown or hidden in diagram, for example, class members, or visibility level.
- Select the check boxes that define the Class diagram appearance and behavior: default layout, behavior after layout, and the possibility to view colored links.
- Apply changes.

