Abstract: Disclosed is a pallet arranging system for use in a multiple-item small-lot production setup. The system uses a plurality of pallet groups each comprising a plurality of pallets, each of the pallets including a plurality of cartridges, each of the cartridges containing a large number of parts of the same type. The system creates channel setting data for use by a part assembler fed with parts and printed circuit boards. The parts are assembled by the part assembler onto predetermined positions on the printed circuit boards in accordance with the channel setting data that designate which cartridge is to be assigned to which of the channels constituting the pallet groups.