Kelvin Ng

This plugin enables blog owners to allow some shortcodes to be used in comments. You can choose what to allow (i.e. Whitelist some shortcodes). It only affects shortcodes in comments, but not in pages, posts, etc. All shortcodes are default to be disabled.
<a href="http://www.kelvinblog.tk/my-wordpress-plugins/shortcode-in-comment-page" rel="nofollow ugc">Plugin Homepage</a>
<h4>Settings</h4>
<ol>
<li>Visit ‘Settings > Shortcode in Comment’ to set what shortcodes are enabled in comments.</li>
<li>Type your shortcode(s) to be enabled in the text box (comma seperated for more than one)</li>
<li>Click ‘Save Changes’ to submit.</li>
</ol>

Shortcode in Comment

Enables blog owners to allow some shortcodes to be used in comments. You can choose what to allow.

prozetagamma

To insert Form & Button:
<ul>
<li>
[spcomments_button
text = (optional) “button title” default: “Submit” 
args = (optional) “argument1,argument2,argument3…” default: “Argument1,Argument2,Argument3” 
formtitle = (optional) “title of form” default: “Leave a Reply” 
popupstyle = (optional) “spoiler|modal” default: “spoiler” 
id = (optional) an valid numeric id default: random number id or a name without spaces 
placeholder = (optional) “form textarea placeholder text” default: “Your comment here…” 
cflabel = (optional) “label of textarea comment text” default: “Comment”
]
</li>
</ul>
To insert a Secondary Button:
<ul>
<li>
[spcomments_button
text = (optional) “button title” default: “Submit” 
formid = (required) the id of existing form to open 
arg = (optional) the name of arg to select default: none 
hideargs = (optional) “yes|no” default: “no”
]
</li>
</ul>
To show a comment list:
<ul>
<li>
[spcomments
arg = (required) “argument1” 
nocommentstext = (optional) “Text if none comment in argument” default “No comments yet on this topic”
]
</li>
</ul>
[spcomments arg=”argument2″] 
[spcomments arg=”argument3″]
To insert a comment textarea (with argument preselected)
<ul>
<li>
[spcomments_textarea
id = (optional) a valid numeric id default: random number id or a name without spaces 
arg = (required) the name of arg to select default: none 
formid = (optional) an id to use for javascript 
formtitle = (optional) “title of form” default: “Leave a Reply” 
cflabel = (optional) “label of textarea comment text” default: “Comment” 
placeholder = (optional) “form textarea placeholder text” default: “Your comment here…”
]
</li>
</ul>
if you need a live demo <a href="https://www.prozac2000.com/wp-lab/index.php/spcomments-shortcodes-kit/" rel="nofollow ugc">click here</a>

SP Comments Shortcodes Kit

Divide comments in arguments and allowing show where you want by shortcode

Shortcode in Comment vs SP Comments Shortcodes Kit