Hi CJ, When this "clicks" you'll kick yourself - like all things in 3D. ;) It sounds like you are new to animation. Dragging a key frame isn't enough, you'll actually need to create a new one so that you have two on the same line. The space between the two key frames (the little black triangles) is the tweener. How do you make a new key frame? Simply move the time marker further down the timeline and then change the item in the scene and Carrara will create a new key frame automatically. I don't know what the tutorial is asking you to move or change but by completing the request with the timeline indicator further along in time, a key frame will be made and then you'll have a tweener also.