How to set the button: set it in the control settings in the options, and click the Save option after setting. Up is up, down is down, left is left, right is right. A is used for dialogue (most frequently used in the game), b is used for cancellation (such as closing the menu), and select is a selection key, which can be used to change the order of items. Start is useless in platinum (usually set to enter), and L and R are useless (hardly used). X is the menu, and Y is the shortcut (for example, after logging in to the bicycle, press Y on the ordinary road, and you will get on the bicycle immediately without opening your backpack, which is very convenient).