The sheep step away, and she flattens herself into the grass. The sheep stop. Their heads have never come up from the grass. We continue in this fashion to the first obstacle. The sheep must pass between the two panels and turn right beyond them, moving along the far end wall of the arena.
Dot moves the sheep through the gap.
On her own, she would probably turn them left, into the blind pocket between the panels. Once again motion ceases, sheep tearing busily at the grass, dog flattened in the grass. The cross drive, which comes next, is deceptively simple. If Dot stays directly behind the sheep, they will break for the starting gate as soon as they are clear of the panel. If she gets ahead of the shoulder of a sheep, that sheep will probably turn back.