I have set up user comment email notification on my Drupal 7 site. When a comment is posted the author is notified by email. I did it using rules module as described here.
Now the user has the option to get notified or not. For this, I added a new boolean field checkbox on the user's account form page. So currently the user must go to his user account page to change this setting. I would like to make this setting available in a panel.
How can I add a checkbox to a panel in order to control that "notify me setting"? (The panel currently displays content type fields, comment forms etc).