Well, to answer the OP's original question -
You can place draw reins in two places (one favourably more than the other). Either attatched to the girth inbetween the horses front legs, or attatched to the girth under the saddle flap, so the draw reins would be running from your hand, through the bit, and back over the shoulders and to the girth near the buckles.
I can't tell anybody to use or not to use draw reins, I personally prefer not to - I'm not against
using them in the right hands, but in the end it's all up to the user.