You can activate or deactivate a subjob directly connected to the selected component. You can also activate or deactivate a single component as well as all the subjobs linked to a Start component. The Start component is the trigger of the Job. It has a green background. For more information about Start components, see How to define the start component.
When a component or a subjob is deactivated, you are not able to create or modify links from or to it. Moreover, at runtime, no code is generated for the deactivated component or subjob.