Everything you add to your Proclaim presentation is part of a service item. Each service item can contain one slide or multiple slides. For content service items, you can insert slide breaks, allowing you to retain all of your text in the same service item, but on multiple slides.
To get started, create a content service item from the Add Item menu at the top of the main app window.
Move the cursor to the location you wish to create a slide break and click the 
slide break button.
Did you know? You can manually insert two dashes -- to add your own slide breaks.