Video walls can be configured in such a way that each monitor will broadcast a certain section of the advertising campaign (specified in the player settings). To configure this type of synchronization divide scenes into zones with unique IDs during project editing. The project itself will have the total resolution of the whole set of screens. Select the needed zone ID in the settings menu of the Addreality Player on each device.
You can manage the broadcasting of the advertising campaigns by using synchronization. In one of the projects set one media gallery as a master, and the rest (one or several) as the slaves. The project broadcast is starting on the master device and sets the synchronization of media galleries on other projects which are slaves.