Handball defense is a numbers game between the 6m line and the 9m arc — whether you play a flat 6-0 or push one defender out to 5-1 changes who your shooters have to beat, and this editor lets you place every defender or attacker to test that choice.
A closed 6-0 keeps six defenders shoulder to shoulder on the goal line — hard to break through the middle, but it concedes outside shots if your defenders don't close out fast. Pushing one out to 5-1 pressures the playmaker and disrupts the first pass, at the cost of a gap the opposing pivot can exploit. The staggered 3-2-1 presses even higher, in three lines, betting on winning the ball early over conceding a clean look if the press is beaten. On attack, the 3:3 with pivot gives you a fixed target on the 6m line to draw defenders before the backs shoot from 9m — placing each player by hand is how you check the spacing actually creates the gap you're planning for, before it's a whiteboard idea instead of a real option.