Carousel Cards appear on your home screen. When creating your cards, you can decide if you would like them to be a carousel card, which would make it rotate at the top of your home screen.

Step 1: Select the App module, select Navigation, then select the Home Cards tab.

Step 2: Find the line item for the card you would like to add as a carousel card. Drag and drop the item from the list of standard cards, into the Top Card Carousel section.

Step 3: Now the card has been added to the top carousel of the home page. Click "Refresh App Preview" if the changes do not take immediate effect in the emulator.

You have created a carousel card! Repeat the above steps to two other cards and it will be a carousel at the top of your home page.