7 creature bestowals is usually the limit.  Appear as male adults.  Are born of woman.  Each planet has only 1 bestowal Son.  Evening Stars bid Magisterial Sons be about brother’s business.  Every planet in local universe will have, except the one on which the Creator Son incarnates.  In unbroken connection with spiritual forces when incarnated.  Incarnate with experienced Adjusters.  Initial planetary mission involves physical incarnation, subsequent ones may not.  May remain an age on first mission if universally accepted. 
None have visited Urantia on magisterial missions.  Number about 1 billion; 1062 in Nebadon.  Referred to as “lesser Christs”.  Residence in Jerusem circles.  Self-governing order based on Paradise. 
Accompany Teacher Sons on planetary missions.  Counselors in local system light and life.  Each Magisterial Sons’s work is unique since no two are alike.  Just as effective and powerful on bestowals as Creator Son.  Not creators in personal sense.  Personally present on bestowal planet for inauguration of morontia temple.  Planetary progress depends on missions of.  Serve under Creator Sons in local universes.