Hi,
you will need to edit shortcode function, it is in shortcode.php, lines 1-75.
Class ABt_testimonials_slide initiates scroller.
Add this line before line 18:
‘show_list’=>false,
And add this line after line 63:
$wrapper_class = ($show_list) ? ‘ABt_testimonials_wrapper_static’ : $wrapper_class;
Then you will be able to use show_list attribute and shortcode will show list when that attribute is set to true
Cheers