Modify cron check interval - import export suite by WebToffee

functions.php

<?php
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;
}