HTML5 Angular portal how to disable user SelfRegistration on Password Reset Portal

Hello,

Problem:

On the HTML5 Angular Password reset portal I have a button that allows the users to create a new account. I have seen that I get a featureconfig json object like this { SelfRegistrationEnabled: true }. I have tried to search for this in the Administration portal but could not find the configuration. The only configuration that I saw is for the form that is displayed when creating a new user. This is the API that gets called to get this featureconfig object /register/featureconfig

Version:

The current version is 9.2.1.

Use case:

To not allow new user creation on the Password portal.

Question:

How can I turn the SelfRegistrationEnabled to true? 

Thank you for your help,

Zan