conferenceuserrole.php

См. документацию.

<?php
namespace Bitrix\Im\Model;
 
use Bitrix\Main,
    Bitrix\Main\Entity;

class ConferenceUserRoleTable extends Main\Entity\DataManager
{
    public static function getTableName(): string
    {
        return 'b_im_conference_user_role';
    }
 
    public static function getMap(): array
    {
        return array(
            new Entity\IntegerField('CONFERENCE_ID', [
                'primary' => true
            ]),
            new Entity\IntegerField('USER_ID', [
                'primary' => true
            ]),
            new Entity\StringField('ROLE'),
        );
    }
}