Open Company Portal
Type Company Portal into the search bar on your laptop's taskbar.
Click on Company Portal in the search results to open it.
Go to the App Catalog
Click on the Apps tab in the left column of the Company Portal to display the available apps.
Find your app
Scroll through the available apps until you find the one you want and click on it. In this example, we will install Promethean Screen Share.
Install App
Click on Install to start the download/install process. This may take several minutes.
Once the app is installed, the Install button will change to Reinstall.