How to Add Custom Roles and Capabilities?

Since version 4.0, user roles and capabilities are built-in. As an admin, you can manage all roles and capabilities within your front-end dashboard Content Capabilities

The "User Role Editor" plugin is a powerful tool that allows WordPress site administrators to customize and manage user roles and capabilities with ease. With this plugin, you can create new user roles, modify existing roles, and assign specific capabilities to each role, and it's available for free download at https://wordpress.org/plugins/user-role-editor/

For further instructions, please refer to the official documentation of the plugin available at https://shinephp.com/user-role-editor-wordpress-plugin/