Customize the slug for the event taxonomy in Sympose

functions.php

<?php
/* Customize the slug for the event taxonomy in Sympose */
add_filter('sympose_customize_event_taxonomy', 'c7_sympose_alter_event_slug');
function c7_sympose_alter_event_slug($args) {
	$args['rewrite'] = array(
		'slug' => 'sympose-event',
	);
	return $args;
}