Can a Member cancel the Pending orders , before normal trading hours?

What do you mean by a member cancelling a pending order?

Yes, the broker has the right to cancel any of the client’s pending orders, if he deems it necessary. However under normal circumstances this wont happen. Only pending intraday orders which cannot be fulfilled by 3:20 pm will be cancelled and any square off orders will be placed.

Broker who is inturn member of exchange(mcx)!!!

Yes, a member can cancel any clients pending orders.