AD Self-Service Plus Users can register questions, but cannot change them later on

AD Self-Service Plus Users can register questions, but cannot change them later on

When a user registers on the system, he/she is able to select the questions wanted to be used to later be challanged with. The problem is: how to replace these questions with new ones?
 
Seems like when a person logs on, after having registered, all they get to update is AD information (Self-Uddate), change the AD Password, and sign out.
 
What is wrong and where are the settings that will allow me to change/modify this so users can change their current registered questions.
 
Thanks
 
Bolivar

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