Fine-tune your movie by changing the length of clips, changing the sequence of clips, and splitting clips.
Split Screen Cropping (iMovie) - Apple Community
Intro to Magic Movies in iMovie on iPhone - Apple Support
How Fix iMovie if Join Clips is Greyed Out
iMovie User Guide for Mac - Apple Support
Crop clips in iMovie on Mac - Apple Support
Arrange video clips and photos in iMovie on iPad - Apple Support
Arrange video clips and photos in iMovie on iPhone - Apple Support (IS)
How to edit, trim, and adjust audio clips in iMovie
Drag clips to the timeline in Final Cut Pro for iPad - Apple Support
Edit audio clips in iMovie on iPhone - Apple Support
Can't split clips in iMovie - Apple Community
Arrange video clips and photos in iMovie on iPad - Apple Support
How to Transfer Videos from Apple Photos App to iMovie on Mac?
iMovie User Guide for Mac - Apple Support
Change the style of a Magic Movie or storyboard project in iMovie on iPad - Apple Support (MZ)