1. An apparatus for executing a copy operation having a first setting to add an image that prohibits a document from being copied to a document to create the document prohibited from being copied and a second setting to add an image that permits a document to be copied with an input of correct authentication information to a document to create the document permitted to be copied with an input of correct authentication information, comprising: a scanner; and a controlling unit to control the apparatus such that when a document having an image that prohibits the document from being copied is placed on the scanner and a user instructs start of a copy operation, not executing the copy operation for the document placed on the scanner, and in a case where the first setting is set, the controlling unit controls the apparatus such that when a document having an image that permits the document to be copied with an input of correct authentication information is placed on the scanner and a user instructs start of a copy operation, not executing the copy operation for the document placed on the scanner, and in a case where neither the first setting nor the second setting is set, the controlling unit controls the apparatus such that when the document having an image that permits the document to be copied with the input of correct authentication information is placed on the scanner and a user instructs start of the copy operation, executing the copy operation for the document placed on the scanner subject to the input of correct authentication information by a user.