You can use BrightWall or the VideoWall Link/Synchronization method to create a video wall presentation in BrightAuthor:connected.
These methods, as well as the BrightWall Configurator, which lets you view and adjust your presentation onscreen are described on the pages 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).