A system for pickup of assembled grocery orders is described herein. The system includes a plurality of color-coded drive-through lanes, a plurality of check-in units with each check-in unit being associated with a corresponding color-coded drive through lane and including a computer check-in device, a plurality of color-coded cashier workstations, an assembly line system configured to deliver grocery items to each of the plurality of color-coded cashier workstations, and a computing system. The computer system includes a processor programmed to receive a check-in notification from a computer check-in device, identify a color-coded drive through lane associated with the computer check-in device, identify a grocery order associated with the check-in notification, and operate the assembly line system to deliver grocery items included in the identified grocery order to a corresponding color-coded cashier workstation associated with the identified color-coded drive through lane.