Here's how to do it:
- In the timeline, click on the video clip you want to trim.
- Drag the playhead (the vertical line) to the beginning or end of the section you want to cut.
- Right-click on the video clip and select "Split clip" to split the video into two clips.
- You can also select “Cut” to cut the section of the video.
- Move the playhead to the point where you want the cut to end, and split the video again.
- You can "Delete" the unwanted section by selecting it and pressing Delete or Backspace.