Restrict the list of parent pages at WordPress page editor

functions.php

<?php
add_filter('page_attributes_dropdown_pages_args', 'restrict_parent_pages_for_role', 10, 2);
 
function restrict_parent_pages_for_role($args, $post) {
 
    if (current_user_can('editor')) {
        // list of pages to include into the parent pages dropdown menu. Do not use with 'exclude' together.
        $args['include'] = array(2, 763);     
 
        // list of pages to exclude from the parent pages dropdown menu. Do not use with 'include' together.
        //$args['exclude'] = array(776, 870, 871, 873, 876); 
    }
 
    return $args;
}

Post with a short description:
https://www.role-editor.com/restrict-the-list-of-parent-pages/