[HELP] Script Editing within Hybrid GUI?

[Selur]

There's no direct script editing in Hybrid. If you want it use another gui or manually write your script.
Hybrid offers to add custom additions under Avisynth->Custom and Vapoursynth->Custom, no clue whether that helps with what you want to do.
If your source already has chapters, Hybrid allows you to select chapters in the Base-tab and encode them separately.
There's also the experimental cut support (Config->Internals->Cut Support; read the tool-tips).

Cu Selur