Abstract: Multiple tape feeders are installed in one row on a feeder setting base of a component mounting apparatus. The tape feeder is a variable tape feeder that is displaceable in a tape width direction to a predetermined displacement amount with respect to a feeder main body in which a reel holder has a wider width than the feeder main body. A mounting management device is a device that performs management of the component mounting apparatus, and sets an installation position considering an amount of displacement of the tape feeder such that the adjacent tape feeders do not interfere with each other.