Patent attributes
A start date of check-out processing of setting a shared document accessible by a plurality of users via a network into an exclusive state is reserved as a check-out start date based on an instruction of a user. In the exclusive state, the shared document can be updated by the user but cannot be updated by other users. When current date has reached the check-out start date, the shared document is set into the exclusive state for the user. The shared document can be released from the exclusive state in response to an instruction of the user checking-out the shared document. An expected check-in date to release the shared document from the exclusive state after the check-out start date can be reserved. This invention enables reservation for a document operation and prevents any decrease in the operation efficiency of users.
