How add or cancel slides without moving all the slides?

How to add slides without moving those to the right or left of the insertion or deletion that?
How proceeding?
Put all the slides in the good order, then the track audio?
What is the good way?

thank’s

The best way to author a slideshow is to add all images you want to show, bring them into the right order to tell your story and then add music and arrange timing and animation. If you have to remove or reorder slides in the middle of the slideshow you should note down how much time you will loose and add this time to the neighbors slides.

with all the features, can the images now integrate without moving those that already exist?
it is possible in a chapter?

thank’s