Starting point outside a shape

As usual, my mind went blank on this feature, even though I recalled seeing it previously.

It’s in the Cuts/Layers section:

I set the numbers high to see the effect:

How would one change the lead-in or lead-out to be inside the shape?

How would one change the location of the lead-in or lead-out? It appears that it starts at the shape start. Is that adjustable?