Installing the App Studio for Microsoft Teams
To install, go to https://docs.microsoft.com/en-us/microsoftteams/platform/concepts/build-and-test/app-studio-overview and click on the link to download App Studio: Click to open Microsoft Teams (or you can launch the Web Client to do this): In Teams, click Add: You will be taken to the App Studio: You can also access App Studio by clicking on the 3 dots in the bottom left and then selecting App Studio: