I'm thinking ground rope and short leads. I've seen something similar done with pack goats. scatterign food on the rope helps train them to it, they'll wait more patiently if they know the ritual includes food sometime. even just a snack.
That makes sense but in that case they'd have their heads down. The animals in the picture are standing with their heads up, looking straight ahead. All of them!
Not that hard to train your goats or cows to this; highly dependent on the animal's inherited personality though. I would routinely milk one of our cows when I was a kid right out in the pasture. She was calm as ever, no food was ever required, and she was never tied to anything. Obviously, she was just very happy to be milked and have the pressure released from her utter (her babes were the same ilk). I agree though, seeing the goat line-up is quite interesting. :-D My current herd would not stand for it, I assure you.
Train them! I have to confess I'm useless with animals. Last time I tried to help, it took three of us to milk one goat. Then she put her foot int he milking pot :)
But that's a herd that's been allowed to go wild and we were primarily milking them for their relief. They're anarchist goats. If I stay longer on the farm (which is not mine) I may give it a go taming and training them, though. Should be fun :D
:-D That's one of my primary reasons for loving goats so much - they 100% completely refuse to bow to industrial agriculture or the whims of man. All goats are anarchist goats. :-D I love it! Good luck! Embrace the anarchy.