A device management apparatus configured to manage a managed device connected thereto via a network, the device management apparatus includes circuitry configured to: present use change information that allows a use change instruction of a function provided in the managed device; determine set values corresponding to the use change instruction for set values of various setting items required to execute the function to which the use change is instructed; and change the set values of the setting items related to the function to which the use change is instructed, for each of managed devices, from the set values before the use change instruction to the determined set values.