Generally, this is how I would ask to see it done:
Start with a long piece of rope. Bindee has both hands placed behind the chair back. Binder places the tail end of the rope in bindee's hand, then wraps a few times arround the wrist. Binder continues to create loops arround the chair, moving from the bottom UP - NO CROSSING OVER (Very important). When they reach the top, bring the rope across the chest, and arround to the bindee's hands behind the back where the bindee actually holds the other end. In the event of an emergency, the bindee can drop both ends of the rope, which can then be quickly pulled off by another actor, or worked out of by the bindee.