Hide the "Add Multiple" buttons from non-administrators in Nested Pages

nested-pages-hide-add-multiple.php

/**
* Place in your theme's functions.php
*/
add_action('admin_head', 'hide_nested_pages_add_multiple');
function hide_nested_pages_add_multiple()
{
	$user = wp_get_current_user();
	$allowed_roles = ['administrator'];
	if ( array_intersect($allowed_roles, $user->roles) ) return;
	echo '<style>.open-bulk-modal, .nestedpages .action-buttons .nestedpages-dropdown ul li a.add-new-child, .nestedpages .action-buttons .nestedpages-dropdown ul li:nth-child(2) {display:none;}</style>';
}