Help with registration form

[eluser]Unknown[/eluser]
Please I'm just trying to get a grip of CI.
There's this line in the users controller file, which I believe generates usernames automatically and a similar line that allows email activation.

Code:

if (Settings::get('auto_username'))

I'll like to disable this feature so users can specify username and also stop email activation.
Please how do I do this

[eluser]kanjimaster[/eluser]
This isn't part of CodeIgniter. It's part of an application written using CodeIgniter and maybe a module or library designed to be integrated with it.

As such your question is unanswerable without more information about the application or the modules that it's using.