Right I’m with you, so as well at the left and right arrows you want to add additional buttons at the bottom.

I would imagine this can only be achieved by editing the menucard.php and including the relevant php code for the page links – http://codex.wordpress.org/Function_Reference/wp_link_pages

I will check with the Dev team to see if this is possible or if it’s something you’d need to speak to the theme customizer team about. As soon as I hear back from them I’ll advise.