I made my machine by converting a Geeetech A10 3D printer, so it hasn’t got many of the features found on commercial units. As a beginner I found it difficult to place my material in the exact spot to get the engraving properly aligned, but I have found a way, as I’m a beginner I’m not sure if this recommended or already in general use by others.
How I do it, for example if I was doing a simple plant label. Measure your material, then in lightburn create a rectangle the same size and set the values to 5000 speed 0.1 power, when you select run the laser will show you exactly to position the work, once you place the work run the lowpower script again adjusting the work if required. It obviously works for log cuts too. In this case use the rectangle to align your text and it will be just where you want it.
I hope this helps someone.