Affects Version/s: None
Fix Version/s: None
If I'm not wrong, the only way to do it right now is:
1) grails s2ui-override register packageName
(It creates an empty class which extends: grails.plugins.springsecurity.ui.RegisterController.)
2) Copy&paste all the code of the extended class where the default fields appear together (username, email, password and password2) Then, adding the new fields after them.
I posted a similar question here: http://stackoverflow.com/questions/17475545/how-to-customize-spring-security-ui-adding-fields/17483445?noredirect=1#17483445
And thank you very much for creating and sharing your plugin!