How do i communicate with GameUserSettings file?

I’ve setup my custom GameUserSettings file and i have know idea how to call functions because i cant cast to it in c++ or in blueprint? How do
i call function etc properly i cant even find an example in the shooter example?

If you’ve created a GameUserSettings-derived class, that doesn’t mean that the game will start magically using it. Look in DefaultEngine.ini and under the [/Script/Engine.Engine] block, assign your new class to GameUserSettingsClassName (eg. GameUserSettingsClassName="/Script/ProjectName.MyGameUserSettings").

Oh ok, thanks