Start Avid Xpress. After successful installation of the Vitascene – Avid Xpress plug-in, Vitascene will be available via the Avid Xpress Effects dialogue box (Effects Editor).
Now drag and drop the Vitascene Filter into the Timeline and click on the Edit Effect option. This will start Vitascene. A playback with the selected transition will appear in the Vitascene preview window in real time and, of course, you can modify the selected transition in Vitascene to suit you.
Once the project has been edited and completed in Vitascene, simply press the F12 key or click on the symbol 
to return to Avid Xpress.
This will automatically save the Vitascene project.