Instructions
Start "Super Smash Bros. Brawl" on the Nintendo Wii console.
Enter the Group mode from the main menu. Select Special Brawl from the Group Brawl options.
Move the sliders left and right to choose specific features that will influence all of the fighters in the next match. For example, if you turn on the Bunny option, all of the characters will move much more quickly than normal.
Press the "Start" button on your Wii controller and choose a stage to apply the custom rules to. The match will start after you pick a level to fight in.