A content management apparatus manages a content display schedule specifying a time frame for displaying content on a display device. The content management apparatus can reserve to-be-displayed content in an available time frame of the content display schedule. At this time, it is determined whether an attribute of the to-be-reserved content overlaps an attribute of other content in a time frame before or after the time frame where the content is reserved. When the two attributes do not overlap each other, reservation of the content is acceptable.