In the Scenes creation window click the
button -
the generate chapters window will appear:

Number of chapters - the number of chapters (scenes) you need.
From...To - the time interval within which the chapters will be placed (this lets you exclude, for example, the opening titles and the end credits).
Method:
Scan distance, % - the offset from the midpoint, in percent, that is allowed when searching for a suitable position for a chapter.
Include in chapters menu - includes the chapters in the menu generation process.
Add chapter at the end - adds a chapter at the last keyframe.