Instructions are provided on how to create and take computer aided admissible probability measurement (CAAPM) tests using programs available on PLATO IV. Admissible probability measurement is a testing procedure that permits a user to express a degree of uncertainty as to the correctness of alternative answers. Section II describes PLATO IV, an interactive computer based education system on which CAAPM resides. Section III presents a tutorial for students on how to take CAAPM tests, and Section IV tells instructors how to create CAAPM tests on the PLATO IV system. Section V discusses recommended extensions to CAAPM, such as the use of slides, touch panels, and random access audio devices which could enhance the testing capabilities of the system. Student data collection and analysis could also be added. (Author/BW)