How to render with spot light?

I think you'll have the best luck if your have the ability to edit the HDRI scene in Keyshot.
Set the environment to "All black"
Then edit the HDRI lighting. You'll be able to insert lights and highlights, and also control their position, size, brightness, and color with real-time updates in the scene.

Without the HDRI editor, you'll most likely have to insert an object, convert it to a light emitter, then use the "move part" dialogs to position the "light" in a good position.

You need to download IES light profile... Please google it, you will get those