How to add more options on setting? How can I add more features on Android's settings. I saw some difference on my CM ROM's settings , how does the developer add new features or option on setting? Is it related with framework?

I want to add Newton interface like this screen shot.
You can't add features and generally customize Settings. Some features are added by android rom (During upgrades, ...) and  Developer Options can be added using this trick:
goto: Settings -> About Phone -> Press Build Number multiple times.