To select the points inside a sphere drawn in a point-cloud:
- Display the point-clouds in the CAD view.
- Click Point-Cloud tab > Select panel > Pick Mode > Sphere.
- In the CAD view, left-click and hold to mark the centre of the sphere, then drag the cursor to specify the radius of the sphere. For example:

- Release the mouse button.
All points inside the sphere are copied to the clipboard.
Tip: Click Invert to select the points outside the sphere. To cancel the selection, press the Esc key.