Making backgrounds of animated GIF files transparent - Graphic

I have been creating animated GIF files using GIMP from several frames in PNG format that I created using Jmol and now I would like to know how to make the background of the resulting GIF files

animation - Glitchiness when I add transparency to a gif and

GIF Maker : How to make animated pictures on Mac/Windows

How to Make Image Background Transparent in Adobe Photoshop?

How to make a video(WebM) with a transparent background - Honeycam

Create a GIF with Pillow in Python

Does Pixelz Offer A Transparent Background Option? – Pixelz

Set animated GIF images as your Lock screen wallpaper with GIFLock

How To Make Background Transparent By Photoshop With Quick

How to make a transparent background in Canva — Fallon Travels