Volumetric Lightmap density is wrong in important area

After building lighting the volumetric lightmaps are low dense in the areas most important for gameplay.
For some odd reason lightmaps don’t dense up on the desk (which is quite big, the play area is the desk surface) and this makes the volumetric lightmaps completely useless in this scenario.

Anyone knows how to fix that?

If you’re using a volumetric lightmap density volume, you can set the minimum and max densities to something lower like 0 and 2, decreasing them makes it a higher density.