Hierarchical Groups is working reverse order

Hello kento,
righnow its plugin working reverse order like below

1. Group “Parent” can be see the parent post only.
2. Group “Child” can be see the child post itself and parent post also.

for my our situation,we need to follow this scenarios.

1. Group “Parent” can be see the parent post itself and child post also.
2. Group “Child” can be see the child post only. ( no need to show the above parent group posts)

can you please how can i do this in your plugin settings and script side?

Thanks