Increasingly we find video monitors in offices and stores that play looping slideshows. All too often these things must either be started by the first people to arrive at work in the morning (and stopped by the last person leaving) or, worse, are left running 24 hours a day. With Automator you can make presentations automatically switch on and off at exactly the times you specify. Here's how.Fine-tune your presentationTo begin, create a presentation in Apple's Keynote that includes all the slides you desire. Within Keynote choose View > Show Inspector and click the Document tab (the first one) in the resulting Inspector window. Enable the Loop slideshow option and from the Presentation pop-up menu choose Self-playing. Configure the Transitions and Builds fields so that each slide plays for the length you want before moving to the next one. Save the presentation and quit Keynote.Build your workfl
