This falls under the aegis of the old joke, "Doctor, doctor, it hurts
when I do this." "Well, don't do that." That is, don't click on the
button "Apply to All Slides." If you don't click the button, then the
settings you change will apply only to the selected slides. This is one
of those odd interface issues since Microsoft did away with many dialogue
boxes for that task pane on the right. Task pane settings don't generally
require a button click to take effect. Note that when I tried this out,
the timings didn't change as soon as I changed them; they changed when I
clicked somewhere outside of the timing box (but not on the Apply to All
Slides button).
--David
--
David M. Marcovitz
Microsoft PowerPoint MVP
Director of Graduate Programs in Educational Technology
Loyola College in Maryland
Author of _Powerful PowerPoint for Educators_
http://www.PowerfulPowerPoint.com/