"Manual" Alignment of Pointcloud

It would be nice to have the opportunity to manually (by using mouse) align pointcloud to cad model, or one pointcloud to other pointcloud and from here make eventualy refine alignment. Idea is to put  with mouse COP on CAD or other COP to lock this on specific area.Thanks to this it would be easier to align only partly scanned surfaces. Today even if I using point pairs sometimes alignment is moving far away from expected place. Actual functionality is working good only if whole part is scanned allround.