Locking a slide for a prescribed time

[MMarsh]

I am developing an online training which must be a prescribed length of time. I want to develop the training in Powerpoint but I have to be able to be assured that a user cannot advance the slide until a certain amount of time has elapsed. Can this be done in Powerpoint? I changed the advance options to advance after xx:xx seconds and deselected the on mouse click but it still advances on mouse click. Any suggestions?

[JohnWilson]

Maybe set the Show to run "Viewed at a kiosk" SLIDE SHOW > Set Up Show and add a button to move on that only appears after a given time.

[MMarsh]

Thanks a bunch! Exactly what I needed.