This function uses with in-built cron of the plugin to automatically updates its currencies rates. For any reason by your own logic its possible to create functionality when its possible to update currencies rates because of any events of your site. It just an idea for developers.
global $WOOCS; $WOOCS->make_rates_auto_update(TRUE);
There is 1 argument in the function: $reset_cron – uses to reset cron сountdown (TRUE), or ignore it (FALSE)