This video shows you how to import users and groups from an active directory controller into Qlik NPrinting through the REST API. This will help you to keep your group and users in Active Directory and NPrinting in sync.
The AdSync to NPrinting tool is a C# library that is available in GitHub. https://github.com/qlik-oss/nprinting-adsync
Take a look at this video to start working with this tool