Board Thread:Support Requests - Getting Technical/@comment-28694993-20160724203229

I was exploring a wiki and I was looking at a page when at the bottom in the comments section I noticed the administrator's comments. Next to their username it would normally say "Administrator" but instead it says something else like "Worker" or something like that. I'm planning to do the same too, but how do I do it? Is there a code that can change these titles? 