Hi, look in the Video Toolbox, there you will see an icon that looks like a small clock with wings (looks similar to an RAF badge), this is the Vary Playback Speed tool. I am looking at an earlier version, but V10 is probably similar.
VIDEO EFFECTS – THE BASIC SET
Your starter library of video effects is divided into five
• Cleaning effects help correct defects in the source
video, such as noise and camera shake.
• Time effects change the tempo of playback without
affecting the appearance of the video frames
• Color effects let you modify the coloration of a clip,
whether subtly or dramatically.
• Fun effects like Water drop and Lens flare provide
extra scope for creativity and fun in your movies.
• Style effects like Emboss and Old film let you apply
distinctive visual styles for added impact.