I have loaded an animation in Blender 2.83.0. When I press Play, I can see the animation playing.
If I press the Tab key, my model goes into T pose. I would like to copy this T pose to the first frame of the animation.
For some reason, I don't manage to show the key frames at all. I have selected "Dope Sheet", then "Action Editor", and then I selected various elements of the model.
But I just don't see any key frames. How could I show them in order to replace them?