A should give a hard targeted push in B's forehand.
B comes offering and runs through the ball. stick on the ground moving forward.
Takes the ball while running and accelerates with the forehand along the pilons, holding the ball to the stick so DO NOT give a tap.
Comes into the circle, aligns the ball and strikes the goal (hands together, left foot in front in the direction of the goal, dropping a little through your knees, finish your stroke).
On the other hand, the same thing is the same, only you have to drive along the pilons to keep the ball one step in front of you.
Switch on the same side so A to the spot of B and vice versa. When all the balls are around you change sides and do the exercise on the other side.