A knot is tied in one end of the string, and this is placed into the notch or groove in the arrow shaft.
The rest of the string is then passed around the shaft once, and is made to align over and above the knot before being stretched down to the point end of the arrow.
The string is tightened, ensuring that the knotted end stays within the notch, and the surplus is wound around the thrower's throwing hand.
The throwing arm should be as fully extended as possible, enabling the arrow to be thrown like a javelin, but held much closer to the tip.
Following through with the throwing hand allows the string to provide additional forward force on the arrow, extending the length and reach of the thrower's arm, in a fashion similar to a sling.