You cannot select more than one are at a time.
In the Scan View, click Edit scan.
In the Mesh Edition
In the 3D view, click points on the
mesh to draw a closed path around the surface
that needs to be removed.
If necessary, drag the points to refine their position.
Consider using the
icon to remove all points or the
to revert the selection.
Note: The area that will be removed will turn yellow.
If the removed area is not what you expected, use the
icon to revert
to the previous state of the mesh.
The selected surface is removed from the scan.