If you wish to do customization we highly recommend you to use child theme (falive-child). Put all your customization on child theme and you won’t lose it when you update theme in future.
For those kind of your request, you will need to modify file: falive-themes/include/archive-header.php (copy it into child: falive-child/archive-header.php). Goto line:33 and you should see this code:
Then you add this code just below that line:
Please let me know if you have any questions.