First of all, if you want to create Zones in your Board, read this article:
Once your Zones have been created, all you have to do is use the "Play 
"
button to scroll through your Zones, like a slideshow.
1 - Click on the "Zones" button to display the List of Zones
2 - Then, click on the "Play" button to activate the "Slideshow" display of your Zones
3 - Use the Zones toolbar to easily facilitate your Board
Thanks to it, you will be able to:
Scroll through your Zones easily with the buttons
and 
Hide the Zone with the button
Enlarge the Board using the button
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