MT | ECP | Have ECP append and trim recurrences every hour instead of every day

tribe_alter_recurrence_rebuild_schedule.php

<?php

/**
 * Tells ECP to append and trim recurrences every hour instead of every day.
 *
 * @see (wp filter) schedule_event
 *
 * @return mixed
 */
function tribe_alter_recurrence_rebuild_schedule( $event ) {
	if (
		class_exists( 'Tribe__Events__Pro__Recurrence__Scheduler' ) &&
		Tribe__Events__Pro__Recurrence__Scheduler::CRON_HOOK === $event->hook
	) {
		$event->schedule = 'hourly';
	}

	return $event;
}
add_filter( 'schedule_event' , 'tribe_alter_recurrence_rebuild_schedule', '10', 1 );

// Load any page on your site once, then remove or comment out the following line.
// This line will cause the cron to reschedule itself, if you do not remove it the
// cron will continually reschedule itself and never actually run.
wp_clear_scheduled_hook( Tribe__Events__Pro__Recurrence__Scheduler::CRON_HOOK );