Purchase Order Lines Overview

Our purchasing department would like to know if it is intended that the Purchase Order Lines overview screen is not editable? I’m in IT so I have access to everything and I can’t modify this screen. My reasoning I gave her that you can’t do mass changes on this (e.g. change all the dates or change the inspection criteria) is because this view PURCHASE_ORDER_LINES_ALL combines both no part order lines and part order lines views. So maybe because of this and no part order lines having different primary keys than part order lines that maybe this is why? If someone could give me a reason or tell me that this screen is editable and I’m missing something, that would be very helpful.