What is vLibrary? Why it is there?
The vLibrary module is a web based application. It is incorporated into the Vahana platform. The vLibrary module allows you to register an app as a template. In your virtual space on the Vahana platform, you first create an app/application. Therefore, you can register your app as a template for the vFlow and vDesigner applications.
Registering an app as a template means that the Vahana platform will treat the app as a template, and then you can create a copy of this template in the same virtual space or organization ID or in a different virtual space or organization ID. Currently, the Vahana platform allows you to create the copy of a template on the app level only.
Refer this documentation for better clarity -