Change Label or Add a Placeholder to Matador Application Fields

matador_tutorial_application_fields_labels_and_placeholder.php

function matador_tutorial_application_fields( $fields ) {
	$fields['firstName']['label'] = 'Label Name'; // changes the label
	$fields['firstName']['attributes']['placeholder'] = 'Placeholder Content'; // Adds a placeholder
	return $fields;
}
add_filter( 'matador_application_fields_structure', 'matador_tutorial_application_fields' );