Hi all ! 

I would like to know if it was possible to add some status in the purchase order tree view (with the filters corresponding), i would like it to work on "quantities delivered" and not on "billing done or not", but as i'm new to odoo (i can only add some colums inheriting form informations at the moment.... :'( ) so i'd need some help to understand how to add items to selection view, how to link it to filters and quantities delivered !

Any help will be much appreciated !!! <3