In order to define a contextual action for FT layers, you need to put your Python script in your Python directory under a directory called Contextual_F_T_Analysis_FT_Layer.
Go to Tools->Options->Environment->Python Scripts (or Tools->Options->Python->Scripts in INTViewer 5.2) and click "Refresh from Disk". Your script should be listed automatically.
You will now be able to execute this script from the contextual menu of the FT layer:
This script will create FT layers based on the neighboring traces of the FT layer's selected trace, and combine them into a new window.
This script is attached to the bottom of this article.
The result after the script executes should look something like the following.