To manage and add applications, you need to click on “Applications” in the navigation menu at the top of the Teamstack dashboard. You can add applications to Teamstack by clicking on “Add Application” in the top right corner of the Applications page. This will redirect you to the Add Applications page, where you can search for the application that you want to add to Teamstack. Once you’ve selected the application you want to add, you will need to enter authentication information.