Teams Real Simple with Pictures: Changing the App Bar for the Team with an App Setup Policy

There may be an app your Team frequently uses. For the purpose of this article lets take this app to be Microsoft Flow where the Team is repeatedly adding Flows between apps such as Forms and SharePoint and Twitter and Powerapps across multiple Teams. They could always add Flow as a Tab to a particular Team, but with the increasing amount of Teams this wouldn't make much sense as the Team members would have to remember what Team, or - as is more likely - they are now adding Flow Tabs across multiple Teams which is littering Teams with Tabs which don't necessarily need to be there.