A task performance method of a
system includes assigning, by the
server, at least one task of a plurality of tasks stored in advance to a first
robot among the plurality of robots, determining, by the
server, a path for arranging the first
robot to a first location in which at least one delivery object related to the task assigned to the first
robot is stored, guiding, by the
server, the first robot to the first location according to the determined path, and guiding, by the server, the first robot arranged in the first position to a second position.