One way you can centralize and secure content created by users is to hide individual users' Home folders in the Pentaho User Console (PUC) or in the PDI client. For example, if your organization implements multi-tenancy, you may want to prevent individual users from viewing their Home folders for security reasons.
You can configure your server to hide the Home folders by default for both PUC and PDI. When you create new users in your system, their Home folders will be hidden. If a user needs to create, edit, or save content, you can provide the Write permission in a folder that is visible to that user. Those users can then view the folder and access the content. You can add the Write permission in PUC and in the PDI client.
These tasks assume you are a Pentaho Administrator.