Option 1. In the left corner in the main screen you can find the user button. Click it and you will find the option Downloads. Option 2. Once you created a project, if you didn't downloaded it before you'll find the option in the following window. Save the installer in your computer and run it. You will have to follow the next steps. Important! The next time you open Revit click Always Load in the following message to allow the Add-in to run. In Revit you will find the Add-In in the Add-Ins ribbon. In Navis you will find the Add-In in a new ENGyn tab. In Excel you will find the Add-In in the Add-Ins ribbon.