How to change forum display name?

[Hoax]

So I was thinking how do I change my display name on the forums? 

Becuase I woud love it to be Jonatan Hoax as it's a name I use very often

 

[Jamz]

Account settings -> Display name

 

[Hoax]

Account settings -> Display name

Well thanks @Jamzwas once told to cotact admins but was a bit confused