This is feature added to WordPress based on the theme used. Here you set the general features, add social icons to header, style the website, and import/export settings.
Note: This feature may not appear on a different Theme.
Here you can set the default layout for all the pages on the site, the content displayed in Posts, where Featured Images are displayed, the size of the Featured Image, and pagination style.
Here you can show links social site.
Note: You have to add a URL for the Icon so be displayed.
This is where you can edit the looks of the posts.