Modify cron check interval - Import export suite by WebToffee (https://www.webtoffee.com/product/woocommerce-import-export-suite/)

functions.php

<?php //do not copy this line
add_filter('wt_iew_cron_interval_details', 'wt_iew_cron_interval_details_fn');

function wt_iew_cron_interval_details_fn($schedules) {
    $schedules['wt_iew_cron_interval'] = array(
        'interval' => (60), //60 second
        'display' => __('Every minute'),
    );
    return $schedules;
}