In rhino for mac it is possible to use Osnap to select/pick/place a point on the interior of a surface. Is this not possible for Rhino for Windows?
Hello - the OnSurface or OnPolysurface snaps are available on Rhino for Windows - you can look in the Tools> Object snap menu or on the OSnap toolbar by holding Ctrl or Shift (for ‘special’ snaps)
-Pascal