Click a key box, then press the key you want. Backspace clears a box, Esc cancels. Each action has two boxes.
Action keeps you and the ball in view. Fixed centres the field and zooms out to show it. These cameras work only inside a field; outside, the self camera stays on you.
Spectator camera (when watching a match from outside): Ball follows the ball, Fixed shows the whole field, OG is a fixed view of the field with slight movements toward the ball and the action.
Low graphics turns off visual effects (kick glow, blur, shadows, animations), refreshes the minimap less often and uses lighter text and edge smoothing, for smoother play on weaker devices. Reload the page after switching for the full effect.