admin.php

См. документацию.

<?php
 
namespace Bitrix\Rest\Controller\User;
 
use Bitrix\Intranet\ActionFilter\UserType;
use Bitrix\Intranet\UserTable;
use Bitrix\Main\Engine\ActionFilter\Scope;
use Bitrix\Main\Engine\Controller;
 
 
class Admin extends Controller
{
    public function listAction()
    {
        return UserTable::query()
            ->setSelect(['ID','NAME','LAST_NAME','SECOND_NAME'])
            ->where('GROUPS.GROUP_ID', 1)
            ->exec()
            ->fetchAll();
    }
 
    public function configureActions(): array
    {
        $configureActions = [];
        $configureActions['list'] = [
            '+prefilters' => [
                new Scope(Scope::REST),
            ],
        ];
 
        return $configureActions;
    }
}