Thanks for the pictures.
the two circled assist lasers are only used for focusing the beam.
You would move the Z-Axis until the red dot and the pointer through the lens converge.
Ideally, that’s where the focus is, but this depends on the mounting angle of those assist lasers!
I recommend focusing by eye and ear first (move the z-axis during a job until the effect on the material is the strongest)
Then check if that’s also where the two dots are aligned.
If not, loosen the bracket of the red dot laser and align the dots.