When you block a specific app for a particular individual or an organization, they cannot install, interact, or discover those apps anywhere in the Teams app store. They won't be able to use any of its capabilities either when you block an app. It is blocked for the entire organization, but you can still choose people you want to allow access to. When the app is blocked, users won't be able to do the following: - Add the app personally - Chat in the app - Send messages to the app's host - Perform tasks that require the use of the blocked app - See the app or its tab