2. The client apparatus according to claim 1 , wherein the memory storing instructions that, when executed by the at least one processor, causes the client apparatus to: set a password corresponding to an authority of each of the plurality of documents when converting the document into a plurality of documents, and notify a user of a password corresponding to the authority.
2. The client apparatus according to claim 1 , wherein the memory storing instructions that, when executed by the at least one processor, causes the client apparatus to: set a password corresponding to an authority of each of the plurality of documents when converting the document into a plurality of documents, and notify a user of a password corresponding to the authority. 3. The client apparatus according to claim 2 , the memory storing instructions that, when executed by the at least one processor, further causes the client apparatus to: record, when the server apparatus cannot limit operations, a password is input by the user, and any one of the plurality of documents included in the merged document is operated, a history of each operation to the document.