T9 Divebombs - Want to understand the logic

[Chokee]

when dragons come down for ice fire thunder phase, turn your camera to 12 o'clock position, then rotate your camera clockwise. the first 2 dragons you see will always dive first, then the 3rd dragon will dive after. so the first marked person parks the mark in between the first 2 dragons while everyone else would go near to the opposite side. the 2nd marked person would then park the mark on either side of the last dragon.