Sub level streaming volumetric lightmaps support in 4.24

According to the release notes sublevel streaming volumetric lightmaps should be supported now.

However. I cant see sub level Volumetric Lightmaps Samples when viewed in my persistent level. Do I need to check some boxes or something?

Grateful for help.

Release notes
***New: *Added support for volumetric lightmap (VLM) sublevel streaming as a memory optimization. It is recommended to enable bUseFastVoxelization=true and bUseEmbreeInstancing=true in BaseLightmass.ini (or better, create DefaultLightmass.ini in your project folder/Config).

Has anyone successfully gotten the Volumetric Lightmaps to function with streaming now?