Volume lighting samples not showing

Completely new to UE4 and wanting to learn about lighting. I started learning about Lightmass importance volume and came across “Volume lighting samples” under the visualize tab, but when I enable this I do not get the sample to show. Not sure what I’m doing wrong.

By default, those types of indirect lighting samples are no longer used. Instead, you would want to look at Volumetric Lightmaps, just under Volume Lighting Samples in that same menu. But, neither option will show anything unless you have baked lighting. In the World Settings, you’ll also see the Volume Lighting Method where you can choose between the Volumetric Lightmaps or the Volume Lighting Samples.

Volume Light Samples work with static light only ( I can be wrong ). So your light source like direct sun light or point light must be static.