XenForo Warning BB-Code

[</clown>]

BB code tag: warning
Title: Warning BB-Code
Replacement mode: simple replacement
HTML replacement:

<div class="messageNotice messageNotice--warning">
  <b>From the administration:</b> {text}      
</div>

Result:

 

[joostyle]

How can this bbcode be set up so that only the moderator or administrator can use it? well thank you