Adjustable shelf holes

Hi I am working on a project and am to the point where I am inserting A.S. holes in my cabinets. What is the best way to insert them into the cabinet sides. In 2d I had a dynamic block that I could stretch into place and would add or subtract holes as I stretch up and down. Is it possible to do this in bricscad 3d and have them automatically subtract from the cabinet sides. Open to different ways of doing this.

Thanks

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