Can I change the vlm location in runtime?

Yellow are static object, green are dynamic object, they attach to a parent object, when I move them as a whole, because there is no vlm, so the dynamic object leaks light.

Ask if it’s possible to move vlm in real time?Ths~~

No, and it would be nonsensical to do so. VLM is all baked data from static objects, so even if you could you would just break the lighting and achieve absolutely nothing. To fix light leaking, or atleast help, try lightmass importance volume.