How to Change Article Options in Joomla
The article options (parameters) allow you to publish the title, author, creation date and modification date of an article. Depending on your site needs you may only want certain article options to be displayed. There are three places that article options can be set: Article Manager Options, Menu Item Article Options and individual article options.
Article Manager Options (Content > Article Manager > Options) This is also known as Global Settings. This is the top level and will apply to ALL articles unless explicitly overridden in another level.
Menu Item Article
To change article options go to Menu > Main Menu > Menu Item(Selected menu item) > Article Options. If the article options are Use Global then all the articles will use the global settings. If the article options are show or hide this overrides the Global Settings AND also overrides any individual article options. To change individual articles choose the option Use Article Settings.
Navigate to Content > Article Manager > Article - Article Options. Articles can be changed individually only if the menu items the articles are in are set to "Use Article" Settings. Otherwise the article options will be that of the Menu Item or Global Settings.