Thank you 🙂 I have found this code and modified to add a checkbox, which it seems to do.
add_filter( ‘fep_form_fields’, function( $fields ){
	$fields[‘public’] = [
		‘type’ => ‘checkbox’,
        ‘label’ => ‘Can we use your message on the site as a story?’,
		‘where’ => ‘newmessage’,
		‘priority’ => 22,
		‘function’ => function( $field ){
		},
	];
	return $fields;
});
I am lost on how to display the field using the display after the message hook, ive tried echoing the value out by editing the message template which I know is bad, but im not sure what the value is?
<?php echo $public;?>
   <?php echo fep_form_fields( ‘public’  ); ?>
              <?php echo $field; ?>
              <?php echo $fields; ?>
Sorry for sounding completely stupid! Any pointers would be great 🙂 thank you so much