Cutting and engraving Falcon Design Space

I own about 20 pcs 3D printers from Creality but bought the new Falcon A1 and is the first laser I’ve owned. I’m trying to understand Falcon Design space and wonder how you do to avoid marks in the plate underneath when you cut things out. Thought it was enough to put another piece of wood underneath but doesn’t seem like it. Grateful for tips on how to proceed.

Thanks in advance
Anders