PLEASE SUGGEST

Sir,
    There were 4 accused A B C D E F. A B C D were the real offender . E& F were relative of A B C D. Complainant indulged the name of E F only because they didn't try to stop A B C D from causing injury to complainant.

              A B C D were juvenile and were tried by juvenile board. They confessed before board and released on admonition.

1- Whether judgment of juvenile board may be produced in defence of E & F.

2- Whether A B C D can be produced as defence witness.

3- How much the, Judgment of juvenile board and statement of ABCD as defence witness, may be relevant for the acquittal of E & F.

Please cite the provision or judgment in defence of ABCD.