A processing apparatus performs: in response to reception of first information by one of the network interface and the user interface, identifying, as a first function, a function corresponding to the first information out of a plurality of functions relating to image data; setting a first authority corresponding to the first information, the first authority being authority to use the first function; after setting the first authority, when one of the network interface and the user interface receives second information different from the first information and when functions identified by the second information out of the plurality of functions include at least part of the first function and a function other than the first function, identifying the function other than the first function as a second function; and setting a second authority corresponding to the second information, the second authority being authority to use the second function.