One PowerPoint teacher told me that I should input the effects (entrance,
emphasis, exits, motion paths for the same object IN THE ORDER LISTED on the
custom animation task pane.  I don't mind doing this if I am inputting them
in the same pass.
I asked:  If I input emphasis today and if I want to input entrance the next
day, does it mean that I have to delete emphasis first and then input
entrance and emphasis so that I am doing it in the order listed?
Answer:  No, you can enter emphasis today and entrance tomorrow.  You can do
a reorder.  There is a reason why Microsoft arranged the effects in such a
way and it is logical to enter them in order.

Can someone shed some light on this please.  In my opinion, I should input
(or reorder) the effects in the order that I want them to be presented when I
run the show.  I don't see any problem inputting "exit" before "entrance" IF
that is really the order I want when I run the slide show.    

I am at a loss about what was being told.  Please help!