1. An authorizer determining apparatus for determining an authorizer for facsimile transmission, comprising: a candidate selecting device for selecting a set of authorizer candidates, based on a combination of attribute values selected in advance for the facsimile transmission; and a determining device for determining an authorization candidate satisfying prescribed conditions, from said set of authorizer candidates, wherein: each of said attributes may assume one or a plurality of values; and said candidate selecting device includes: a first condition value storage storing, for each possible value of each of said plurality of attributes, a condition value set in advance, a second condition value storage storing, for each of a plurality of possible authorizers, a condition value that is determined in accordance with a privilege of the corresponding possible authorizer, a function value calculating device responsive to a request for facsimile transmission, for reading the condition value related to each value of said plurality of attributes of the facsimile transmission related to the request from said first condition value storage, and calculating a prescribed function value corresponding to the condition values, and a candidate extracting device for searching, in said second condition value storage, for a possible authorizer having a condition value not smaller than the value calculated by said function value calculating device, and extracting the possible authorizer to be said authorizer candidate.