This is a standalone program, an .exe that you click on and run with a simple interface. It essentially copy and pastes the 3D body from a source model file to however many desired model file(s) all at once, and can serve as a time saver and substitute for the shrinkwrapping process in Blender.
Check my official modding tools thread for more info on how to use the tool: viewtopic.php?f=241&t=107076