MB Admin Columns is an extension for the Meta Box plugin, which allows developers to show custom fields in the posts, terms and users lists in the WordPress admin area. You can set the column position, column title, make it sortable and/or searchable. When develop WordPress themes, plugins or customizing a website, adding custom columns to the admin screens for entire posts or custom post types is one of the common tasks. The custom admin columns allow users to have a better overview of the content. For example: if we have a custom post type Book, then should need to show Book Author, Publisher, Number of Pages, Category in columns in the All Books screen (as shown in the screenshot above). By default, WordPress only displays a very limited content (title, date) on that screen and that’s not enough.
