(1) The rules of a registered society or branch may provide for the admission of a person under twenty-one years of age as a member.
(2) Any such member may, if he is over sixteen years of age by himself, and if he is under that age by his parent or guardian, execute all instruments and give all acquittances necessary to be executed or given under the rules, but shall not be a member of the committee, or a trustee, manager, or treasurer of the society or branch.