After you create your illustration(s) on the WinFlex website, click on the orange Ensight button at the top right corner of the WinFlex page.

The illustration dialog box will open, letting you use a template to create a new presentation, create a new presentation from scratch, or add your illustration(s) to an existing presentation.
In addition to accessing Ensight when you run an illustration in WinFlex, you can access your Ensight account at: https://ensight.assuranceapp.com
TEMP Zendesk