This is a short manual that covers basic things and helps you to get started with HTrace Ambient Occlusion.
Import HTraceAO package into the project
Add HTraceAORendererFeature into the UniversalRendererData
Default volume profile settings (Unity's docsarrow-up-right)
Global settings can be found under Project Settings > Graphics > URP > Lighting > HTrace Ambient Occlusion.
More information about Volumes in URParrow-up-right
Scene's Volume override (Unity's docsarrow-up-right)
Add HTraceAO script on your scene