Need to create animation on negative frames of the timeline. Been working on this all day.. Please help


I need to animate the negative frames on the timeline but can’t render negative frames. The problem is that I need to add animation before the frame that the animation starts (frame 0) and dragging the Summary timeline don’t change the picture at Frame 0 that I needed to have in the ending. The animation is made in the material editor, displacement and Noise. There I have the animation speed on and is probably why I can’t drag the timeline. Can someone please help me! Been searching for a solution to this problem for hours.