What @SaeranVasanthakumar said.
If you really wanted to customize things, you can manually set the wind pressure coefficient of each Aperture using the Ladybug Tools SDK inside a GHPython component. Here is the most relevant class for trying to do this type of customization. But, if you are looking for some streamlined workflow that takes some type of CFD result and translates that into something that helps out the EnergyPlus AFN, that’s probably far in the future after we have refactored the Butterfly plugin.