It is possible to add interactivity easily on a schedule. This can be done by attaching an event (represented by A1, A2 or A3) to an action. The events Ax could be for example: a user click, the end of a video, change of date, …
Each event can act maximum one time per layer. An action is the fact to modify the screen currently displayed on a specific layer at the same time the event was triggered.
To make the scheduler easier to use, it is also possible to remove the default display duration of a screen.