Ladybug radiation analysis

Hi, I am trying to use the Ladybug Radiation Analysis plugin,

And I set several geometries, let's say three. How can I calculation the total radiation(Kwh) in these three geometries separately? I know there is a total radiation, but it is the radiation in all geometries, and I want to calculate the radiation in KWh per geometry?

I try to use the radiation results (in Kwh/M2) but I fail to integral the results(in kwh/m2) with the mesh.

Thanks in advance.