It's quite easy to duplicate or remove a slide by using the universal keyboard shortcuts. ⌨️
Select multiple slides
Use ⇧+⌘ or ⇧+Ctrl with keys to select multiple slides. You can use ⌘+A or Ctrl +A to select all slides of your presentation.
Duplicate my slide
Select your slide and use ⌘+C and ⌘+V or Ctrl+C and Ctrl+V in your slide manager. You can use ⌘+D or Ctrl+D to duplicate the currently selected slides. They’ll be placed right after the currently selection.
Remove my slide
Select your slide and use the "delete" button or ⌫ in your slide manager. If you deleted your slide by mistake, use ⌘+Z or Ctrl+Z to undo your action.
"I want to know more"
Read our following blogpost to know everything about our slide manager.