private static function AddMembergroupOptions(CheckList $field)
    {
        $sql = Access::SqlBuilder();
        $tbl = Membergroup::Schema()->Table();
        $orderBy = $sql->OrderList($sql->OrderAsc($tbl->Field('Name')));
        $groups = Membergroup::Schema()->Fetch(false, null, $orderBy);
        foreach ($groups as $group)
        {
            $field->AddOption($group->GetID(), $group->GetName());
        }
    }