If your devices are set up as a group in WiZ, they will automatically propagate commands received from the infrared WiZmote in order to stay in sync. For example, if you have set up 8 downlights in a group and turn one on with the remote, the 7 other ones will soon follow and turn on as well.

This is helpful when your devices are scattered across the room and not all of them can be in range of the remote at once, or when some of your devices do not support infrared. 

Note that commands are only propagated within groups, and not within rooms.