There are several different ways to create a video wall presentation in BrightAuthor:connected. You can use BrightWall, BrightWall with Multi Asset widget, or the Link/Synchronization method.
Each method is described on a page below:
You cannot use the BrightWall or BrightWall with Multi Asset widget methods if you are using standalone publishing, because you must be connected to a network (additional configuration is required after publishing the presentation).