Так там же кнопочка появляется в админке кажись "Создать таблицы"
Там в модели модуля есть функция:
public function createTables() {
$sql = "
CREATE TABLE `os_category_option` (
`option_id` int(10) NOT NULL auto_increment,
`status` int(1) default '0',
`sort_order` int(10) default '0',
PRIMARY KEY (`option_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE `os_category_option_description` (
`option_id` int(10) NOT NULL,
`language_id` int(10) NOT NULL,
`name` varchar(127) NOT NULL,
PRIMARY KEY (`option_id`,`language_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE `os_category_option_to_category` (
`option_id` int(11) NOT NULL,
`category_id` int(11) NOT NULL,
PRIMARY KEY (`category_id`,`option_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE `os_category_option_value` (
`value_id` int(10) NOT NULL auto_increment,
`option_id` int(10) default '0',
PRIMARY KEY (`value_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE `os_category_option_value_description` (
`value_id` int(10) NOT NULL,
`language_id` int(10) NOT NULL,
`option_id` int(10) NOT NULL,
`name` varchar(127) NOT NULL,
PRIMARY KEY (`value_id`,`language_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE `os_product_to_value` (
`product_id` int(11) NOT NULL,
`value_id` int(11) NOT NULL,
`option_id` int(11) NOT NULL,
PRIMARY KEY (`product_id`,`value_id`,`option_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
";
....
}