Most of my broodies will break by just being moved off the nest and kept in a small pen, they will pace and cluck to try to get back, so be prepared to see that, occasionally I have a stubborn one that will sit anywhere, that's the ones that need the wire bottom for. Three days breaks most, the longer they are broody the longer it takes. I can catch mine quickly and break them in two days.
Be aware that broodiness is contagious, and if a broody is left, others get the idea. They stop laying eggs when broody and can take up to 6 weeks to resume again.
Make sure to provide food and water, and again they will pace so put them where they won't get knocked over.
