This practice session focuses on ball possession in a 4 vs 2 drill, where 4 red players try to complete a set number of passes against 2 yellow defenders who aim to win the ball back. The session is organized in a 15m by 15m grid with cones, footballs, and 4 red players against 2 yellow defenders. Key observations for coaches include support angles and distance, width, depth and penetration of red players, decision making, and body shape for receiving passes.