A method for manufacturing a wing panel of an aircraft comprising: positioning a skin panel in a work area; positioning a support structure on a surface of the skin panel; and operating a plurality of groups of robots in parallel for attaching the support structure to the skin panel at a plurality of locations, and operating robots of each group of robots of the plurality of groups of robots in synchronism for attaching the support structure to the skin panel at a location of the plurality of locations, wherein the plurality of groups of robots comprises a plurality of pairs of robots, wherein a first robot of each pair of robots of the plurality of pairs of robots performs a first plurality of manufacturing operations on an upper surface of the skin panel, and a second robot of each pair of robots of the plurality of pairs of robots performs a second plurality of manufacturing operations on a lower surface of the skin panel, wherein the method further comprises: supporting the skin panel by a plurality of retractable support members; and positioning the second robots of each of the plurality of pairs of robots, wherein support members of the plurality of retractable support members are sequentially retracted to permit positioning of the second robots of each of the plurality of second robots, and the retracted support members are extended after the positioning of the second robots of each of the plurality of pairs of robots. positioning a skin panel in a work area; positioning a support structure on a surface of the skin panel; and operating a plurality of groups of robots in parallel for attaching the support structure to the skin panel at a plurality of locations, and operating robots of each group of robots of the plurality of groups of robots in synchronism for attaching the support structure to the skin panel at a location of the plurality of locations, wherein the plurality of groups of robots comprises a plurality of pairs of robots, wherein a first robot of each pair of robots of the plurality of pairs of robots performs a first plurality of manufacturing operations on an upper surface of the skin panel, and a second robot of each pair of robots of the plurality of pairs of robots performs a second plurality of manufacturing operations on a lower surface of the skin panel, wherein the method further comprises: supporting the skin panel by a plurality of retractable support members; and positioning the second robots of each of the plurality of pairs of robots, wherein support members of the plurality of retractable support members are sequentially retracted to permit positioning of the second robots of each of the plurality of second robots, and the retracted support members are extended after the positioning of the second robots of each of the plurality of pairs of robots. supporting the skin panel by a plurality of retractable support members; and positioning the second robots of each of the plurality of pairs of robots, wherein support members of the plurality of retractable support members are sequentially retracted to permit positioning of the second robots of each of the plurality of second robots, and the retracted support members are extended after the positioning of the second robots of each of the plurality of pairs of robots.