Course apps have been pre-approved for integration into your courses but have not yet been installed. Follow the below instructions on how to install an application in your course.
In Course Navigation, click the Settings link
Click App tab.
The App Center shows all apps available in your course . You can also filter by installed  and not installed , or use the search field to locate a specific app .
To view a quick description of an app, hover over the app. To view all details, click the app.
View App Details
Note: The Canvas App Center does not always contain all the information about an app. You may want to visit the Edu App Center for complete information about the external app you want to configure.