I’ll add the caveat here that if your display is too small vertically, you might have to change the layout.
This is the default layout for LightBurn, and it’s 838 pixels tall:
If your display is shorter than that, you’ll need to dock the windows differently, by dragging the Laser and Library windows off the bottom and docking them over the windows on the top, like this:
That is 537 pixels tall, and the smallest you can make the LightBurn window.