On feeding, when I had multiple dogs I always did the same as Zande, all dogs fed at the same time, although not always the same place. When the weather was nice I sometimes fed outside. But wherever, I sat and supervised until everyone was finished. I had one who would try to poach if not watched, but she knew better than to make a move with me sitting there. Never had a serious fight with any of mine, and never a disagreement over food, but a breeder I know had to permanently separate two bitches who hated each other and would fight instantly if they had the opportunity....the cause of their dislike had nothing to do with food and everything to do with one bitch interfering with the other one's pups.
