In this example, you can see how to add connectors to connect the shapes and how to customize the appearance of the connectors. You can use the style property of the connector to customize its stroke style. You can use the cornerRadius property to add connectors with rounded corners. To change the appearance, click different styles in the property panel. Additionally, you can see how to lock the connectors to disable editing. The constraints property of connector enables/disables editing. In this example, the shapes are automatically arranged using hierarchical tree layout. Injecting Module Diagram component's features are segregated into individual feature-wise modules. To automatically arrange the shapes, we need to Inject HierarchicalTree module into @NgModule.providers section.