How to custom Nautilus shortcuts for 'Open in Terminator'
https://askubuntu.com/a/1062263
https://help.ubuntu.com/community/NautilusScriptsHowto
1. Create a script
vim ~/.local/share/nautilus/scripts/Terminator
#! /bin/bash
terminator --working-directory=$(pwd)
sudo chmod 777 ~/.local/share/nautilus/scripts/Terminator
2. Create shortcuts
vim ~/.config/nautilus/scripts-accels
F4 Terminator
3. Restart Nautilus
nautilus -q
4. Test
Press F4 to go to Terminator