If I understand correctly, When clicking on Physical Part PP2, you only want to see the Parameters P1 and P2 related to the selected Physical Part?
To achieve that, you could use a dataview that listens to the first listview.
In my example, I am using retrieves via database and association, but of course you can use microflows as datasource. In the datasource MF within the dataview, you have the 1 selected object from the left side list view available as a parameter.
Hope this helps.