Unless "chin" is signaled, "high" usually begins when the guard with the ball waves the other one through.
5 rubs off of the cutting guard to the elbow.
1 passes to 5.
After passing to 5, 1 has three options.
1) screen away,
2) back cut, or
3) screen over the ball.
On the pass into 5, 1 may elect to cut backdoor. 5 looks at 1 cutting, then looks at him again as he comes off of 3, who has again set a screen on the block.
5 might also turn and dribble at 4 who executes a backdoor/fill or flare situation.
If this occurs, 1 moves to the midline, and 3 pops out.
5 headhunts 1's man and a top flare is created.