When
creating a tab and slot feature in an assembly component, you can propagate the slots to
other instances of the same component in the
assembly.

If an assembly has a component with a tab previously created with the Tab and Slot tool, you can propagate slots for that tab
to other instances of the component in the assembly as well.
For example, if you have an assembly with multiple instances of a part
with a tab, you can propagate slots for the corresponding instances.
Slots propagate only when the tab component intersects with the slot
component.
If you pattern or mirror a component with a tab, you can select
Propagate Slots in the PropertyManager to
apply slots to intersecting components in the assembly.