A process and system for manual multi-layer stacking of objects having different dimensions on a load carrier in a predetermined spatial arrangement including determining the spatial arrangement of the objects to be packed according to an order listing, delivering the objects to a supply level of a workstation in a sequence based on the spatial arrangement automatically by an autonomous mobile robot and/or an automated guided vehicle, supplying objects to a working level of the workstation and there presenting the objects to the operator, manually moving the objects onto a support connected to a manual stacking station in the working level and presenting the load carrier in the manual stacking station, where the load carrier defines a work surface for the stack being formed on four sides as it is packed with objects, and manually placing each object at a position in the stack according to the predetermined spatial arrangement.