[Plugin: Post Expirator] Show box in user end – for guest posts

looks like the whole point lies in the code with the comment “Called when post is saved – stores expiration-date meta value”. Is it as simple as adding drop boxes with labels $day,$hour etc…?
Could you please guide me? Or if you have time could you please write some sample code?

For anyone interested and needs a quick solution, here’s a workaround I found if you are using UCAN Post plugin (you can see it in action here: https://qrspace.coolestech.com, create a new post and click add expiry):

1- Go to the directory: /ucan-post/views
2- Edit the file: UCAN-Publish.php

The file content should be like this:

<p>
  <strong style="font-size:18px;color:blue;"> <?php echo __('Congratulations, your post was submitted successfully!', 'ucan-post'); ?>
</p>
<?php
  if($this->ucan_options['uCan_Moderate_Posts']){ ?>
    <p> <strong> <?php echo __('Your post is awaiting moderation and should be available soon.', 'ucan-post'); ?> </strong> </p>
<?php }
  else
    $maybe_view_new_post = '<a href="'.$new_post_permalink.'">'.__('View My Submission', 'ucan-post').'</a>';
	$maybe_edit_new_post = '<a href="'.get_edit_post_link($new_post_id).'">Add Expiry Date</a>';?>
<p>
  <?php echo $maybe_view_new_post;
  echo '  |  ';
   echo $maybe_edit_new_post; ?>
</p>

This will lead to the user going to the edit post page where the meta box is available, view how it looks here:
https://qrspace.coolestech.com, (create a new post and click add expiry)

(You can Select all contents of the file and replace them with the above code ?? )