rehearse timing of presentation

[Guest]

I have a LONG PowerPoint presentation that needs to be ready by TUESDAY! It
has picture and music from a staff conference. I want to "rehearse timing"
and change pictures to match the music. However, I get the first part
perfect, and then need to change something farther along in the presentation.

Do have to re-time the ENTIRE presentation? or is there a way to save the
"good" parts and only re-time the "bad" parts?

I need IMMEDIATELY help!! Thank you!

 

[Guest]

Music is quirky that way in PowerPoint. It's really hard to match the timing
precisely. Also remember that the timing may change as you play the PPT on
different computers with different processing speeds.