Casambi and DALI groups allow you to control multiple luminaires simultaneously.
In the wireless Casambi system, devices in a group can be physically distant form each other, as long as they are within a Bluetooth range. In a Casambi network, one luminaire can only be part of one group. Devices in a Casambi group can be controlled via the Casambi app.
In a wired DALI system, all devices in a DALI group need to be physically connected to the same DALI bus. Luminaires are assigned to a DALI group by their addresses, and on luminaire can belong to multiple groups. Devices in a DALI group are controlled through the DALI controller, which sends commands to the entire group.