Well I've been working on a ghost in the shell version of the KittyCorp City stage for the Motoko PSA over Zerosuit samus. I'm almost done but I haven't the slightest clue how to edit animations. I wanted to top off the stage with the background displaying The Laughing Man logo that I edited to have a bit of a tv static look in it.

Anyways the gif has 81 frames, the animation for the screen in the background displaying Dawn and Rukia has two frames and I can't figure out how to add more frames. I've tried looking for tutorials about animating by frames but couldn't find anything very helpful. Can anyone help me out here?