Have be trying to use the resize tabs and slots, I do the measurements when I put what I want nothing happens I even followed Rich The Louisiana Hobby Guy step for step nothing happens for slot or tab.
any help is greatly appreciated
If you can attach your Lightburn file here we’ll take a look.
Take a look here: LightBurn Tips and Tricks - Diode Laser Wiki There is a section explaining the function. You probably need to optimize the shapes first.