For 4-axis machining, the work origin consists of the XY work origin and the B rotating angle, together determining where the engraving and cutting will begin on the material.
The XY work origin corresponds to the (0,0) coordinate origin in Luban. The machine will only perform tasks in the expected area in the XY orientations if the two origins are set consistently.
The B rotating angle refers to the angle that the material rotates.
Do not change the Z-axis height of the toolhead in this step, or you will need to redo the procedures of adjusting the laser height.