Training herdsman and using a herdsman crook doesn't work. I think the herding crook is supposed to have a toggle feature (x key) that allows you to bind and unbind cows to herds. Upswing is supposed to make them move twice as fast as downswing. None of this works. Cows dont even respond to you hitting them most of the time. To be fair it could just be the server I'm on doesn't have it enabled or something.
Maybe add a link to this forum to the Persistent Kingdoms steam group and to https://persistent-kingdoms.com/ to make it easier to find?