the orignal terminator_plugin not support configration UI.
all plugin settings at Preferences >> Plugins is dummy

here is a HACK way to implement custom UI for Plugin at Preferences >> Plugins

refs:
yurenchen000/terminator-autotheme-plugin#3
https://gnome-terminator.readthedocs.io/en/latest/plugins.html

• hack_ui.py is the Hack Helper class
• my_prefs*.py is the Usage demo

Preview