Turn timeline snapping on or off
Timeline snapping affects how far the playhead jumps when you click the Go to previous frame or Go to next frame buttons, and how close together you can position keyframes on the timeline. If you want finer control when positioning keyframes, turn off timeline snapping. If you want to have your keyframes snap at specific time intervals (for example, snap to the closest tenth of a second), turn on timeline snapping, and change the snap resolution.
To turn timeline snapping on or off
Select the timeline from the Storyboard picker by clicking the Open a Storyboard button
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under Objects and Timeline and then selecting a storyboard.Click the snapping toggle button
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.You might also want to change the snap resolution to specify the snapping intervals per second.