Puntuado con 4 de 5 estrellas

Working great in 78.9.0 but where do I find the preferences tab to choose custom shortcuts? I'm lost.

Esta valoración es de una versión anterior del complemento (1.7). 

You need the "Manage Extension Shortcuts" tab.
It can be found via menu: Tools, Add-ons and Themes, click on the wheel up right and you'll find: Manage Extension Shortcuts.

Sorry for my very late reply, hope you found it in the mean time.