A system (1,21) for controlling lighting devices to render light effects upon activation of a light scene or mode, said system (1,21) comprising: a user interface (50,80); at least one transmitter (4,24); and at least one processor (5,25) configured to: - receive, via said user interface (50,80), user input for configuring a first light scene or mode for lighting devices located in a first spatial area, - add one or more lighting devices located in said first spatial area to said first light scene or mode based on said user input, - receive, via said user interface (50,80), further user input indicative of an addition of a group of lighting devices located in a second spatial area outside said first spatial area to said first light scene or mode, - add said group of lighting devices to said first light scene or mode, - upon activation of said first light scene or mode, control, via said at least one transmitter (4,24), said one or more lighting devices as individual lighting devices and said group of lighting devices as a group to render first light effects determined according to said first light scene or mode, different lighting devices of said group being controlled according to light settings, wherein said light settings are the same light settings or have differences within a predefined range, characterized in that: said group is represented as a single light source in said user interface (50, 80), wherein: - upon activation of a second light scene or mode for said group of lighting devices located in said second spatial area, the at least one processor (5, 25) is configured to control, via said at least one transmitter (4,24), one or more lighting devices of said group as individual lighting devices to render one or more second light effects determined according to said second light scene or mode. a user interface (50,80); at least one transmitter (4,24); and at least one processor (5,25) configured to: - receive, via said user interface (50,80), user input for configuring a first light scene or mode for lighting devices located in a first spatial area, - add one or more lighting devices located in said first spatial area to said first light scene or mode based on said user input, - receive, via said user interface (50,80), further user input indicative of an addition of a group of lighting devices located in a second spatial area outside said first spatial area to said first light scene or mode, - add said group of lighting devices to said first light scene or mode, - upon activation of said first light scene or mode, control, via said at least one transmitter (4,24), said one or more lighting devices as individual lighting devices and said group of lighting devices as a group to render first light effects determined according to said first light scene or mode, different lighting devices of said group being controlled according to light settings, wherein said light settings are the same light settings or have differences within a predefined range, - receive, via said user interface (50,80), user input for configuring a first light scene or mode for lighting devices located in a first spatial area, - add one or more lighting devices located in said first spatial area to said first light scene or mode based on said user input, - receive, via said user interface (50,80), further user input indicative of an addition of a group of lighting devices located in a second spatial area outside said first spatial area to said first light scene or mode, - add said group of lighting devices to said first light scene or mode, - upon activation of said first light scene or mode, control, via said at least one transmitter (4,24), said one or more lighting devices as individual lighting devices and said group of lighting devices as a group to render first light effects determined according to said first light scene or mode, different lighting devices of said group being controlled according to light settings, wherein said light settings are the same light settings or have differences within a predefined range, said group is represented as a single light source in said user interface (50, 80), wherein: - upon activation of a second light scene or mode for said group of lighting devices located in said second spatial area, the at least one processor (5, 25) is configured to control, via said at least one transmitter (4,24), one or more lighting devices of said group as individual lighting devices to render one or more second light effects determined according to said second light scene or mode. - upon activation of a second light scene or mode for said group of lighting devices located in said second spatial area, the at least one processor (5, 25) is configured to control, via said at least one transmitter (4,24), one or more lighting devices of said group as individual lighting devices to render one or more second light effects determined according to said second light scene or mode.