You would need to create a new bottom sidebar template file and call it using <?php get_sidebar('sidebar_file_name');?> in the relevant template file(s) of your theme.
what would I put in the bottom sidebar template file though? I’m clueless!
I understand to call it I would put <?php get_sidebar('sidebar_file_name');?> in my index.php? page.php? and post.php?
Have a look at your existing sidebar.php file and use that as a template. Where you call the new sidebar depends very much on where you want it to appear and the way in which your current theme is constructed.
