Any application's user base is subject to change and variation over time. In a business-oriented application, for instance, user churn or an increase in staff size may result in frequent user changes. This can also apply to 4D applications, which is why it has an integrated users and groups system. The integrated system allows developers to deploy a 4D application with a users and groups system that allows administrators to easily manage the users of the application. This Technical Note will go over the details of the 4D users and groups system. There will also be an implementation to build an automated function that maintains modifications. A sample application of this implementation is also available with the source code of the feature.