Marconius 1 points 4y ago
It should just turn it on for your account. It's also not hard to toggle as you can do it in your account settings and through the language options when starting a show. You can control the language options through all manner of Netflix versions whether it's on a SmartTV, game console, AppleTV, or any other device. Still, should just change it for only your account.
Edit: and by Account, I did mean your personal Netflix profile.