If you are willing to rename the word “Pax” then WP Travel plugin provides the feature regarding renaming the word “Pax” under Group Size in a single itinerary page using filter code as per your requirement.

To rename the word “Pax” you have to add the following given code in the functions.php file of your child theme.
function wp_travel_customize_travel_info_section (){
return __( '%1$d Your text here', 'wp-travel' );
}
add_filter('wp_travel_template_group_size_text','wp_travel_customize_travel_info_section');
Note: You can replace the word “Pax” under Group Size with any name as per your requirement.
For detail information regarding how to create a child theme, please refer to our Knowledgebase.
Rename Pax:

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