To do a quick uniform numerical scaling Shift+rightclick just below the S in the Transform Panel and enter your number in any field.
To enable shadows for spotlights in a v4 viewport go to Camera Icon above the view -> Properties… -> scroll down to Camera Display -> Switch on Realtime Shadows.
Example:
NewScene
CreatePrim "Grid", "MeshSurface"
SetValue "grid.grid.ulength", 75
SetValue "grid.grid.vlength", 75
CreatePrim "Cube", "MeshSurface"
SetValue "cube.kine.local.posx", 7
SetValue "cube.kine.local.posy", 11
DeleteObj "B:light"
GetPrimLight "Spot.Preset", "Spot"
SetValue "Spot.kine.local.posx", 40
SetValue "Spot.kine.local.posy", 35
SetValue "Spot.kine.local.posz", 10
SetValue "Spot.light.soft_light.shadow", True
SetValue "Camera.camdisp.rtshadowenable", True
SetDisplayMode "Camera", "OpenGL"
SetValue "Camera.kine.local.posx", 17
SetValue "Camera.kine.local.posy", 20
SetValue "Camera.kine.local.posz", 12
SetValue "Camera_Interest.kine.local.posy", 5
SetValue "Camera.camvis.gridvis", False
SetValue "Camera.camvis.objlights", False
CreatePrim "Sphere", "MeshSurface"
SetValue "sphere.kine.local.posx", -3
SetValue "sphere.kine.local.posy", 6
SetValue "sphere.kine.local.posz", 2
DeselectAll