I am trying to follow this answer: Pan or zoom in the VSE (accepted answer)
After I right click on
x offset and select
Add driver, the x offset turns purple. I am not sure how to see the graph screen or how to add keyframes as suggested in the answer.
How does one see the graph screen, and add keyframes (So I can animate the x-offset of a photo to get a pan and zoom effect)? Could someone please provide some more detail?