Requesting a Username Change

[AC-mister]

Hey there, there isn't a subforum for forum issues, so off topic seems the best place to ask this,

I want to know if requesting a username change is possible around here, since I stopped using this one some time after I made this account. And I couldn't find anything related to this posted.

I'll only specify my request once I know who, or if I can ask. Thanks in advance.