There is no minimum requirement, but groups of at least 5-8 seem to enhance group dynamics and the level of discussion. Although the most common use of CFP courses is at the parish level, the courses are also used by certain dioceses to train deacons or Canon 9 priests. If you wish, a sample chapter of a CFP course can be sent for your review. Groups often leave time for review of the questions and individual responses. There are also Group Building Exercises which take the group further in applying the material to their own situations.
Tutors receive their courses free.
When needed, Trinity can award a certificate upon completion of each course.