[Render/View Layer ]Enable for this layer only

whenever we determine a layer's visibility mode there is also an option called "Enable for this layer only". For Example; If we're making a Shadow Catcher for a certain object we would need to "Duplicate the object --> Set as Shadow Catcher -->and [Manually] Disable it on the rest of the layer and the layer we created after". the "Enable for this layer only" will only enable it for THAT view layer AND automatically disable the layer in the previous view layers and the view layers we created after