A controller in an information processing device is configured to acquire first information about a plurality of users respectively present at a plurality of locations within a predetermined region, the first information including information related to a current behavior of each of the users at each of the locations or a behavior predicted to be taken by each of the users at each of the locations within a predetermined period. Further, the controller is configured to decide order of visiting when a visitor who visits the users visits the users based on the first information.