I have kept them in the outer run during the day instead of free ranging to help the chicks establish home.
Now I’m wondering if they’d get friendly by free ranging? Or should I wait til they all get along before I let them out?
I would probably keep them in for now.
If they free range, they would probably be happy to stay apart from each other, but it would not teach the chicks where "home" is supposed to be. Also, forcing them to be together (same run) is one way of forcing them to get used to each other faster, which is probably a good thing in this case.
If they start injuring each other, I would probably divide the space (wire mesh) rather than letting them out to range, because that is also a way of forcing them to accept each other in close quarters but not letting them hurt each other.
But that is just one set of views. With chickens, there are usually many ways to do something, and several of them work equally well.