Select an option in the Drill Centre of area to determine where the holes in your model are drilled:
- Selected Circular Vectors — Holes are drilled at the centre of any selected circular vectors. Selected vectors which are not circular are ignored. Enter a tolerance in the Tol. box to determine whether a vector is circular or not.

- All Selected Vectors — Holes are drilled at the centre of all selected vectors, irrespective of their shape. The hole is drilled at the centre of the bounding box of the selected vector.

- All Selected Vector Nodes — Holes are drilled at every node on each selected vector.

- Drill Toolpath Plunges — Holes are drilled where a toolpath plunges.