Noob question GM Name/Appear

[Anaror]

In the game how does a GM's name appear, or say if you wanted to talk to one, how would you right it in whisper box?

So in other words, when I'm entering the GM's name in a dc tool, how exactly do i spell it?

[caladabolg]

(insert name)[GM]/[PM]

[Anaror]

K thanks ^^