Because the add-ins are integrated into Outlook, and become part of Outlook, they can be found in Outlook. Just look for the Sperry Software tab in the main Outlook window:
If you don’t see this tab, then it could be because of mismatched “bitness” – that is, a 64-bit version of the add-ins was installed into a 32-bit version of Outlook. This article can show you how to tell if you have 32-bit or 64-bit Outlook, but the simplest thing to do in this case is to uninstall the 64-bit version, then download the 32-bit version and install that.