Hi,
If you need this in a project now, you can put oddly shaped holes into walls with empty openings (If there's nothing you like in the stock library, I know swiftCAD has some solutions for this).
Also, an even better solution might be using Shells instead. They can be vertical composites just like walls, and you have the option to change their boundary and put holes in them.
Good Luck, Daniel
Daniel Alexander Kovacs
Professional Services Consultant
GRAPHISOFT
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