1. On the Record, Import, Edit tab you can move the pointer to where you want to start the video. Then click on the drag the small triangle so that it would reach the pointer.
2. Next is to set the pointer to where you want the video to end. Then click on the drag the small triangle so that it would reach the pointer.
3. Should you want to trim in the middle of the video, bring the pointer to the point where you want to trim then click on Add Trim Markers. Through this, there will be additional markers that you can use.