Create a custom user role in WordPress and remove admin pages that don't have the user role

custom-support-role.php

<?php
/*
You want to add this code to the functions.php file or, ideally, to a new plugin. Best for when you need to provide admin
access to a website but don't want admins having access to certain pages that will break or mess up the website.
*/
function create_support_team_role() {
    // Add a new role called "Support Team"
    add_role( 'support_team', 'Support Team' );

    // Get the administrator role object
    $admin_role = get_role( 'administrator' );

    // Make sure the administrator role exists
    if ( ! empty( $admin_role ) ) {
        // Get all capabilities of the administrator role
        $admin_capabilities = $admin_role->capabilities;

        // Add the custom capability "support_team" to the "Support Team" role
        $support_team_role = get_role( 'support_team' );
        $support_team_role->add_cap( 'support_team' );

        // Duplicate the same capabilities as the administrator role to the "Support Team" role
        foreach ( $admin_capabilities as $capability => $value ) {
            $support_team_role->add_cap( $capability );
        }
    }
}

add_action( 'init', 'create_support_team_role' );

function remove_admin_pages_for_non_support_team() {
    // Check if the current user is not a Support Team member
    if ( ! current_user_can( 'support_team' ) ) {
        // Remove the "Posts" menu page
        remove_menu_page( 'edit.php' );

        // Remove the "Pages" menu page
        remove_menu_page( 'edit.php?post_type=page' );

        // Remove the "Comments" menu page
        remove_menu_page( 'edit-comments.php' );

        // Remove the "Appearance" submenu page
        remove_submenu_page( 'themes.php', 'themes.php' );

        // Remove the "Plugins" submenu page
        remove_submenu_page( 'plugins.php', 'plugins.php' );

        // Remove the "Users" submenu page
        remove_submenu_page( 'users.php', 'users.php' );

        // Remove the "Tools" submenu page
        remove_submenu_page( 'tools.php', 'tools.php' );

        // Remove the "Settings" submenu page
        remove_submenu_page( 'options-general.php', 'options-general.php' );
    }
}

add_action( 'admin_menu', 'remove_admin_pages_for_non_support_team' );