To enable an operator at a branch to efficiently perform business processing, to reduce occurrences of erroneous inputs or the like, and to reduce a time for processing or a waiting time of a customer.

When a business processing screen is designated by a branch terminal 1, information for identifying the designated business processing screen, information for identifying an operator who has designated the screen, and information for identifying the branch are transmitted to a management server 10. The management server determines whether it is necessary to display help information by referring to a table of a DB12 on the basis of the transmitted information. When it is necessary to display help information, the branch terminal 1 displays on a display part 2 the help information obtained from the management server.