You can customize your setting through Admin => Site => Global Settings, you will get to the "Global settings" page. Global settings define a mechanism for storing configuration data used in the application settings architecture. Once you enter value to the Global settings page and saved, then the values will be overruled by the settings in the Global settings. Below is a description of each tab of the general config to aid in finding what you need.
The most importantly Site configuration section under the Global Setting is to customize site’s Title, Name, Country, Currency, language and other SEO related setting. According to the given value, the entire application will be rendered and every modules and sub-modules will follow this instruction added here.