Select the light glyph, or select the
light in the Lights in Model window.
Select the Position grip.
The Position grip is
at the bottom of a spotlight and at the center of a point light.
Drag the light to the new location and
click to place it there.
NoteA spotlight rotates
as it moves to maintain its aim at the target. If you want to move
both source and target, drag the light glyph itself, not the Position
grip.