After the installation of the add-on, you'll need to reload the page to see the new navigation links. Inside the JIRA add-on administration, you'll find the entry "Outlook App" in the navigation bar.
After installation you'll get asked for a yasoon Company Account. You can either directly create one for your company or login with an existing one. The yasoon account is mandatory and makes it easy to distribute the setup files and manage future updates. After the registration you can see a brief overview about your JIRA for Outlook add-on. It'll show your Account Status, the public certificate for your application link, as well as the download link for the setup file. | 
