# Managing users and roles

Manage users and roles to update who is allowed to access the Pentaho Data Mastering application and which actions users are allowed to perform in the application, based on their assigned role. To add, remove, or update users, you must make changes in the Keycloak IAM server. You can view, assign, and remove user roles in the Pentaho Data Mastering application.

* [Viewing users](/pentaho-data-mastering/managing-users-and-roles/viewing-users.md)
* [Viewing user roles](/pentaho-data-mastering/managing-users-and-roles/viewing-user-roles.md)
* [Removing a user role](/pentaho-data-mastering/managing-users-and-roles/removing-a-user-role.md)


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