About Collision Detection Settings
Collision detection settings provide dynamic collision detection during the assembly process and during dragging operations. While you are placing a component, you can verify that its movement is not affected by an assembled component. Use collision detection in dragging operations to ensure that no components interfere with the movement of a selected component. Stop movement when a collision is detected, or continue moving the component and get a continuous collision view.
Set the configuration option enable_advance_collision to yes to enable advanced options.