how can i set this feature please see red marked.

[solution]

how i set the red marked area in my forum . how the forum moderator set it please help me
if possible tell me ho to add this plugin

[Lynx]

solution,

That's not a plugin - it's a built-in feature called labels. See how to make and use them here: support.proboards.com/thread/562772/labels-creating-applying