It does not depend on club rules.
By federal regulation he must be under direct arms length control. He is an unlicensed person in control of a firearm, and thus needing direct supervision by a licensed person.
CFO, in doing range inspections in Saskatchewan, has been emphasizing the need for direct control of unlicensed persons.
Update:
Had my son out at a local club last weekend. Sun and Mon (family day).
Sun we did 2 round's of 5 stand with a new to him 20g micro citori. He loved it! First round he might have went 5/25. 2nd round maybe went 10/25. He even managed a double!
Mon. we did 2 round's of trap. Score was kept by the club. 5/25 and 11/25. In the rain. He loves shooting clays! 24" barrels in a 20g.
We're going back tomorrow for a couple more rounds hopefully of 5stand again.