Elements on multiple surfaces

Hi everyone,

Im having difficulties to implement elements (holes, bounding boxes, pyramids …) on multiple surfaces.

The problems i have is:

  1. Implement elements on multiple surface without changing the shape of elements (strech,twist or bend)

  2. Transfer the geometry from a reference surface to the original (multiple) surface.
    I attached the pictures of my surfaces and a Rhino file

thank you for your help

multiple surface_03.3dm (66.8 KB)