1. Navigate to the documentation by right clicking the HealthShare icon in your system tray and clicking Documentation. (You could also access Documentation if you have a Management Portal screen open and you're logged into one of your instances. Once logged into the Management Portal > Click the Home tab at the top left > Look in the Links section at the bottom right > Click Documentation).

2. Once inside the documentation search the below. The documentation I was referring to is this article. I followed it and had no issues accessing my SDA extension properties in Information Exchange.  If this article does not help you then I would suggest getting with the WRC who would provide support to you.