Make a Clip Go in Slow-Motion?

On the right side of each clip in the timeline, you’ll see a little right-facing triangle. Click on one and it brings up a settings dialog where you can type in a speed for that clip. Use a number lower than 100% for a slow-motion effect or higher than 100% to speed up the clip (ideal if you wanted to zoom through a clip where people were walking from one place to another in your video).