How to separate render pass by stencil layer

Excuse me eyeryone.
I’m a newbie in unreal and trying to seperate layer.
Example by box and floor like a picture i’ve attached.
I render in exr multichannel but render pass like AO , Normal , Lighting , Unlit , etc… still combine like a master layer
Does anyone know how to completely separate render pass.

Thank you in advance for your help.