I am designing a level (featuring height variations, overhangs, etc.) using the ‘Cube Grid’ tool in Unreal Engine 5’s Modeling Mode. When the level design is finished, the Cube Grid outputs a single-piece Static Mesh consisting only of the outer surfaces.
My goal is to convert this single-piece mesh into a structure composed entirely of Hierarchical Instanced Static Meshes (HISM) using a specific single cube of my choice, while preserving its original shape and hollow shell structure. I don’t want to fill the internal volume of the shape with cubes; I only want to convert the outer surface into HISM cubes. How can I achieve this?