You can have multiple presentations on a sign. The presentations can be set to rotate on a timed interval. This method is especially useful when you have dynamic text fields and point-of-sale integration when each presentation needs to have its own fields, relevant to the image or video background.
Instructions for setting up a sign with multiple presentations on a timed interval:
Create a sign
Add or create a presentation on the sign
Add or create a second presentation on the sign (you can have as many presentations on a sign as you'd like)
On the Sign page, go to the sign properties tab
Change the Sign Scheduling drop-down to "Rotate presentations on a timed interval"
Set the interval you prefer
Publish the sign