This article covers how to split a clip in timeline or storyboard mode.
Splitting a clip means cutting it at a selected point, splitting it into two smaller clips.
1) Click to select the clip you wish to split. You will know if your clip is selected if you see the clip action buttons appear.
Move the playhead to the point on the timeline or storyboard where you want to split the clip.
2) You can also use the keyboard shortcut (s) for splitting clips.
Successful Split Clip in Storyboard Mode
Successful Split Clip in Timeline Mode