Recently a Belvaspata* master asked this question regarding initiations for children.
Q. I have felt guided to initiate my son into Belvaspata. Is it okay to initiate children?
A. As a guideline, I recommend Belvaspata initiations be done according to the maturity of the specific child. If a child is mature, they could be initiated at age 11 into Level I and II Belvaspata, otherwise at age 12. Mastery level initiation may be done at age 14 and Grand Mastery at age 15.