Thanks for the reply. It is indeed pain and i'm in the same situation, fortunately, its only 2 apps that I wanted to deploy so far on few machines but the prospect of organisation-wide deployment is worrying and wanted to be on the top of it before I'm given the task. The app is a free one but I couldn't find it in the list of apps that are available to me. I can understand the concept is for end users to be in control of the apps, but that is not how it works in business environment and the last thing you would want is to give the end user authority to add apps in discretion. In terms of DISM option though, Do you add the package before deployment or add it with online DISM?
Thanks