Only an admin can add new tags

To restrict non-administrators from adding new tags in the WordPress admin area, you can use a combination of WordPress hooks and capabilities checks. The idea is to disable the ability for users who are not administrators to create new tags while still allowing them to select from existing tags when editing posts. Here’s a custom … Read more

How to make a secondary Pages Screen

You’ll start with add_menu_page(), to create the actual admin page. From there, it’s really up to you, but I recommend using the WP_Posts_List_Table: nearly everything is built-in and ready to use. There are several comprehensive articles on creating a custom list table; most of them should be sufficient for getting you started.