Change the above information will be used for any additional tickets/attendees messaging on the registration checkout page for Event Espresso 4

new_gist_file.md

Add the sample code below to your child theme's functions.php file or in a site specific plugin.

<?php
//* Do NOT include the opening php tag

//* Change the messaging for the additional tickets/attendees on the registration checkout page
add_action( 'FHEE__registration_page_attendee_information__auto_copy_attendee_pg', 'ee_custom_messaging_above_information_additional_tickets_attendees' );
function ee_custom_messaging_above_information_additional_tickets_attendees() {

 return 'Replace me with new messaging or delete this entire statement to remove the messaging.';
}

References:

http://eventespresso.com/topic/tweaking-ee4-for-a-more-tolerable-end-user-experience/