A new button box can hold a lot of commands. Start with the three you already reach for most. Push-to-talk, a pit limiter, and a relative display make a useful example, though your wheel and sim may already cover some of those. Write down each action and when you need it before you move a binding.
Make the main controls easy to find
Choose positions you can describe without looking. Put a frequent action in a corner or beside a distinct dial, then leave some separation around controls that are easy to confuse. For a Stream Deck, use brief labels with clear contrast and put setup or recording actions in a separate folder or page. See how to group and label actions in Elgato’s quick start guide.
Test the mounting position from the seat before tightening anything. Can you press an outside key while your other hand stays on the wheel? Does the display stay readable at the angle you use? If you race in gloves, do the test with them on. The Elgato mount collection is a starting point once you’ve picked a position and confirmed your device model.
Run a short rehearsal
In a solo session, call the radio, open the display you use, and make a practice pit entry. Check that each command works while the sim has focus and that adjacent buttons do what you expect. If you race in more than one sim, keep shared actions in the same physical spot when the bindings allow it. A blank key is available for the next control you genuinely need.