In what situation would you use the Overwrite mode?

Using Overwrite mode is particularly beneficial when you want to replace existing clips in the timeline without creating any gaps between the clips. This mode allows you to place a new clip directly over an existing one, effectively replacing it while maintaining the original timeline's structure. This functionality is ideal for instances where you are refining edits and have a new or alternate take you'd like to insert in place of an old clip without disrupting the overall flow of the project.

In contrast, the other scenarios mentioned do not align with the primary purpose of Overwrite mode. Keeping a group of clips together pertains more to using techniques such as nesting or grouping rather than overwriting. Splitting clips is typically done in a separate process—utilizing the razor tool or a similar function—rather than relying on Overwrite. Lastly, selecting multiple clips on a track is related to selection tools and does not involve the overwrite function, which focuses on replacing content rather than merely selecting it.