Jim, thank you for your response.
Yes, this is one way of doing it.
But I would eventually like to affect instances, that go across layers. For example removing individual bricks, to insert a window. If there would be a possibility to do this in a single (curved) array cloner, then it would be much simpler, as one would only deal with a single cloner object. Not sure if I’m making sense. Here is a screenshot of what I’m trying to do (though later with more extensive openings, etc.)
