1. An apparatus comprising: a change unit configured to change a combination of a color used to designate a region to be processed by encircling the region by hand and a content of processing to be performed inside an encircled region on a processing instruction sheet on which processing instruction information is written for instructing to perform processing on a document to be processed; an input unit configured to input image data by reading the processing instruction sheet; a recognition unit configured to analyze the designated region to be processed and a color used for encircling the designated region by handwriting portion and to recognize a content of processing to be performed inside the analyzed region encircled with the analyzed color according to the combination of the color and the content.