About Intersection Visibility
Use the default options to create a feature that removes material and stores all feature information in the top-level assembly. You can specify the level at which the intersection is visible.
The information used to create an assembly feature intersecting geometry of different components is stored at whichever level the assembly feature intersection appears as follows:
When you display the intersection at the assembly level, the assembly feature is only visible when you are in that assembly (the component is not affected).
When you display the intersection at the component level, the assembly feature is visible at that level and all levels above it.
The visibility level and intersected components list can be edited after the feature is created by selecting the feature in the Model Tree, right-clicking and choosing from the shortcut menu.
When you display the assembly feature in a lower-level assembly, the system creates an external reference in the lower-level assembly to the top-level assembly.