A method (600) of assisting a user in installing a light source array (110) at a display (120) is disclosed. The light source array (110) comprising individually controllable lighting units, the method (600) comprising: receiving (602) first information indicative of dimensions of the display (120), receiving (604) second information indicative of dimensions the light source array (110), virtually segmenting (606) the light source array (110) into a plurality of segments based on the dimensions of the display (120) and the dimensions of the light source array (110), wherein each segment comprises a plurality of individually controllable lighting units, wherein a length of a first segment (112) corresponds to at least a part of a length of a first side of the display (120), and wherein a length of a second segment (114) corresponds to at least a part of a length of a second side of the display (120), controlling (608) lighting units of the first segment (112) according to a first light setting, and controlling (610) lighting units of the second segment (114) according to a second light setting different from the first light setting.