Hi. The search depth would need to be set in the config.php file. For example, if you want a search depth of one, then just set the following in the config.php file.
PHP Code:
define('SPIDER_MAX_LIMIT',1); //max recurse levels in spider
define('SPIDER_DEFAULT_LIMIT',1); //default value
define('RESPIDER_LIMIT',1); //recurse limit for update