Specification: One grid of which each cell shows different vid-signal of a stream and has 6 bottoms:
- the delay (in milliseconds) of the vid signal
- Y/N mute
- Y/N ticked for inter communication/ conference
- forward the vid signal
- backward the vid signal
use case (more here), streaming back to the internet the event of projecting (on wall's street) a stream taken from the internet of event (such as an in door assembly) and showing both streams in the grid.