Location of the Spot Light Command
You can access it under the ribbon menu Rendering tab, Light - Camera title.
Click the Spot Light icon.
Click the point where you want to define the spot light with the left mouse button.
Move the mouse to rotate the light source in the direction you want.
When it is in the direction you want, click the left mouse button.
The light source will settle.
Determining the node where the spot light will be placed
Determining the direction of the spot light
The formation of spot light