Setup Instructions

Step 1: Install High-Definition Render Pipeline
Go to Windows -> Package Manager. High-Definition RP (12.1.7 or later) and click “Install”.

Step 2: Assign the High-Definition Render Pipeline Asset
Go to Project Settings -> Graphics and assign a High-Definition Render Pipeline asset.

Important note!

Check both “Project Settings / Graphics” and “Project Settings / Quality” sections since you can define HDRP settings overrides in Quality levels.
Now you can use Volumetric Lights!