Our experienced and green horses learn to move off the leg with energy and impulsion. We need this impulsion to then meet the hand so we can create positive tension between leg and hand to where the horse comes off the leg and arrives in the hand. The degree to which the rider asks the horse to settle into the box depends upon how well-schooled horse and rider are. There has to be forward motion first before the hand can be effective. Always keep the leg-to-hand dialog alive.