Here is a short video, which describes how can a FADE Time be applied, to any Cuelist Master fader
This technique can be useful, to apply FADE time to Inhibitives, Overrides, Chases (Intensity chases), and so on.
Here's a link, on how to install a Loopback Adapter (called KM Test, in Windows 10)
Install Loopback Adapter
And here's a short demo video I've created:
Fade Submasters Demo