In this article, you can read about how to manage the Launcher, and add & remove apps.
The Happeo Launcher is an application catalog that is shared with all users in the organization. Adding a launcher item will make it visible to all organization users in the catalog.
The launcher items need a name and URL to open. The icon is automatically fetched from the URL if possible but admins can also add their own icons. Adding a description will help in finding the application in search.