How To Use WP Admin Custom Page Plugin?
Install and activate WP Admin Custom Page plugin. After activation the plugin adds a new page with name ‘Sample Admin Page’ on Dashboard -> Sample Admin Page. This is your custom admin page, you can change its title and customize the whole page by visiting Dashboard -> Settings -> Admin Custom Page which provides you a WYSIWYG editor and page title field. Customize the page and click the ‘Save Changes‘ button. That’s all, your page will go automatically active with new title & content.
Another interesting thing you can do is create some private static pages in WordPress. Creating private pages is the default WordPress feature, you can easily create a private page by visiting Dashboard -> Pages -> Add New and then on the ‘Publish‘ metabox, click ‘Visibility‘ and select ‘Private‘ radio button. The private WordPress page comes only visible to the registered members of your website. In this way you can create various private pages on various topics and then show them in a Table of Contents by creating a custom admin area page.