I am making a model where I have two sources that supply me with 4 types of boxes per color, those from source 1 go through the processor and then are put together on the rack together with those from source 2 but I need 200 and in the end my floor warehouse of blue boxes is empty thus preventing my entire production from sending the 4 boxes together on a pallet, I don't know how to do it so that they give me the quantities I need and there are no boxes left in either the rack or the floor storage