pewc_filter_settings.php

<?php
/**
 * Add new options to the global Product Add-Ons Ultimate settings
 */
function prefix_filter_settings( $settings ) {
	$settings['prefix_section_title'] = array(
		'name'     => __( 'New Title', 'pewc' ),
		'type'     => 'title',
		'desc'     => '',
		'id'       => 'prefix_section_title'
	);
	$settings['prefix_upper_value'] = array(
		'name'			=> __( 'Upper value', 'pewc' ),
		'type'			=> 'number',
		'id'				=> 'prefix_upper_value',
		'default'		=> '180',
		'std'				=> '180'
	);
	$settings['prefix_lower_value'] = array(
		'name'			=> __( 'Lower value', 'pewc' ),
		'type'			=> 'number',
		'id'				=> 'prefix_lower_value',
		'default'		=> '155',
		'std'				=> '155'
	);
	$settings['prefix_section_end'] = array(
		'type' => 'sectionend',
		'id' => 'prefix_section_title'
	);
	return $settings;
}
add_filter( 'pewc_filter_settings', 'prefix_filter_settings' );