A method for operating a postpress processing installation (1) for producing and processing product units, in particular completed final printed products (D) such as periodicals and newspapers, which are preferably compiled from a jacket product (A) and a plurality of part products and/or inserts (a, b, c, d), and a corresponding postpress processing installation (1). The final printed products (D) are produced according to a predetermined production plan in a manner adapted to the route along which they travel and are processed by means of at least one stacking device (70, 70.1) to form a sequence of standard packages (N) and part packages.