Decide where each change belongs
Write down the action and the problem it causes. A cramped grip might call for moving a button. Difficulty holding a control may be better addressed with a game’s supported toggle. Start with the in-game or console option when it covers the requirement and use an Input Translator for changes that need to follow the controller across your supported setup.
Test the existing accessibility options before adding an adapter. Xbox provides customization through Xbox Accessories for its Adaptive Controller. PlayStation offers button assignments and stick adjustments in Access controller profiles. Compare those options with what you need to do in a menu as well as during play.
Make a layout that can be reset
Keep an original profile and make changes in a separate slot. Start with confirm, back, pause and movement. Then add the actions used frequently in the game. Test two simultaneous buttons and an ordinary session to catch conflicts that a quick menu check misses.
If you add another switch or controller, verify which input port or device provides each action in Device Monitor. Label the cables and keep a short mapping reference within reach. A spare default controller or a known-good profile can help you recover if you lose access to a system menu.
Test from your usual playing position
A control that feels easy to reach during setup can become awkward after changing chairs, moving a controller stand or using it for several minutes. Try the layout from your normal playing position. Check that cables stay clear of moving parts and that you can reach pause and back even when your hands are resting.
Sources
Titan Two AI publishes these guides independently. ConsoleTuner makes the Titan Two device and Gtuner IV.