Technically, yes, but requires custom coding. If this is something you can do, here is a little guidance to get you started.
You would remove the cn_list_character_index
action like this:
remove_action( 'cn_list_character_index', array( 'cnTemplatePart', 'index' ) );
You might have to run this on the plugins_loaded
hook.
You would then write your own action to run instead. You can very likely use the existing code instead of writing from scratch. Here’s the link to the code:
You would want to replace this line specifically:
Set the $characters
variable to an array of characters you want to be displayed as links.
I hope this helps!