With the Retime Tool enabled in the Graph Editor, you can create and manipulate retime markers to shift curves or curve segments in time, or warp entire sequences to make them occur faster or slower.
There are two main ways to manipulate curves with retime markers:
For example, to retime curves for a whole character at once, select the character hierarchy.
When you add multiple retime markers in the graph view, a solid line spans above each pair.
Dragging the individual markers scales the region of animation within the span. The curves in the graph view squash and stretch as you drag. You can also view the adjusted timing of the animated object in the scene view.
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