Show Debug Menu grants you access to the game's debug menus without enabling the actual debug mode. While this is safer than playing with debug mode on, I didn't curate the things you can do with it, which means you can easily mess up your save file by misusing the debug menu. Only use this if you truly and genuinely know what you're doing. You can opt to show only the Pause menu's debug menu, only the debug menu for pokémon (Pkmn), Both or turn it Off for the time being.