How to Use Slide Sorter View in PowerPoint
Slide Sorter view is a great way to view and organize your presentation, particularly when your presentation has many slides.
PowerPoint switches to Slide Sorter view, displaying all of the presentation's slides as thumbnails.
The slide is dropped in the new location and all slides in the presentation are renumbered accordingly.
You can also press the Delete key on your keyboard.
When you’re done working in Slide Sorter view, return to Normal view to continue editing the presentation.
PowerPoint switches back to Normal view, and you can edit the selected slide.