I'm creating a kiosk show, and have run into the same problem that others
have mentioned with getting the timing down so that each slide remains on the
screen for a short while before advancing to the next slide.  The problem
with the "automatically after" setting on the Advance Slide is that this
seems to be the number of seconds after the previous slide starts, not after
it ends -- so, for example, if you set slide 1 to advance automatically after
8 seconds, when the slideshow plays, it will display the animation for slide
1, and then if the 8 seconds are up, immediately advance to slide 2.  Or,
conversely, if the animation for slide 1 only took three seconds, the slide
remains on the screen for five seconds...maybe longer than you want.

Obviously, for a kiosk show what you want is uniform transitions.  I can
think of two ways to do this:

1.  Observe how long it takes each slide to display, add whatever margin you
want, and put that as the Automatically After time for the slide.  This means
having to do this for each slide, and if you change anything on a slide, you
have to do it over.

2.  My workaround, which is a bit of a kludge but which I prefer to method
1: add an invisible object (I used a box, no fill and no line), and animate
it a Very Slow speed.  This gives you about four seconds added onto the end
of the slide.

My question is...is there a more elegant way to do this?