user-roles-plugin.php

<?php
/*
Plugin Name: New User Roles
Plugin URI: https://github.com/andykillen
Description: Adds additional role(s)
Version: 1.0
Author: Andrew Killen
*/

function new_user_roles_plugin_activation() {
    $capibilities = [
        'activate_plugins'          => false,
        'delete_others_pages'       => true,
        'delete_others_posts'       => true,
        'delete_pages'              => true,
        'delete_posts'              => true,
        'delete_private_pages'      => true,
        'delete_private_posts'      => true,
        'delete_published_pages'    => true,
        'delete_published_posts'    => true,
        'edit_dashboard'            => false,
        'edit_others_pages'         => true,
        'edit_others_posts'         => true,
        'edit_pages'                => true,
        'edit_posts'                => true,
        'edit_private_pages'        => true,
        'edit_private_posts'        => true,
        'edit_published_pages'      => true,
        'edit_published_posts'      => true,
        'edit_theme_options'        => true,
        'export'                    => false,
        'import'                    => false,
        'list_users'                => true,
        'manage_categories'         => false,
        'manage_links'              => true,
        'manage_options'            => false,
        'moderate_comments'         => true,
        'promote_users'             => true,
        'publish_pages'             => true,
        'publish_posts'             => true,
        'read_private_pages'        => true,
        'read_private_posts'        => true,
        'read'                      => true,
        'remove_users'              => true,
        'switch_themes'             => false,
        'upload_files'              => true,
        'customize'                 => true,
        'delete_site'               => false,
        'update_core'               => false,
        'update_plugins'            => false,
        'update_themes'             => false,
        'install_plugins'           => false,
        'install_themes'            => false,
        'upload_plugins'            => false,
        'upload_themes'             => false,
        'delete_themes'             => false,
        'delete_plugins'            => false,
        'edit_plugins'              => false,
        'edit_themes'               => false,
        'edit_files'                => false,
        'edit_users'                => true,
        'create_users'              => true,
        'delete_users'              => true,
        'unfiltered_html'           => true,
    ];

  add_role( 'business_owner', 'Business Owner', $capibilities);
}
register_activation_hook( __FILE__, 'new_user_roles_plugin_activation' );

register_deactivation_hook(__FILE__, 'new_user_roles_plugin_deactivation');

function new_user_roles_plugin_deactivation()
{
    remove_role('business_owner');
}