exclude from light

Is the exclude function working or still a WIP?
I am just not sure if I am doing something wrong at the moment.

Attached herewith a screen grab. I have spots in the floor that need to wash on the timber frames, but the furniture block the light.
I have “excluded” the seating on the lights but still they render a shadow

The blind seer use great magic: Corona composition tag, no gi, no cast shadow. cam visibility
I think you exclude in light maybe AOV setting. Bsb omen.
I back go hunt mammoth