Hello
How can I change minimum character of prefix in mybb admin panel ?
How can I change minimum character of prefix in mybb admin panel ?

<span style="color: gray; font-weight: bold; font-size: 13px;">THREAD_PREFIX</span>
<span style="font: 11px Tahoma; color: #fff; background: linear-gradient(135deg, rgb(245, 105, 12) 0%, rgb(245, 174, 118) 50%, rgb(245, 105, 12) 50%, rgb(245, 105, 12) 100%) repeat scroll 0% 0% transparent; padding: 0 5px 2px 5px; border-radius: 3px; font-weight: bold; opacity: 0.8;">Thread Prefix</span>
.thread_prefix {
background: linear-gradient(135deg, rgb(245, 105, 12) 0%, rgb(245, 174, 118) 50%, rgb(245, 105, 12) 50%, rgb(245, 105, 12) 100%) repeat scroll 0 0 transparent;
border-radius: 3px;
color: #fff;
font: bold 11px Tahoma;
opacity: 0.8;
padding: 0 5px 2px;
}
<span class="thread_prefix">THREAD_PREFIX</span>