Move quickly to the position indicated.

Stand beside but away from the player taking the penalty  pass so as not to impede that player.

(Especially when a penalty is set on the goal line inside the goal circle.  Ask the defender to stand on the court side of the shooter and not allow them to sqeeze in the area between the goal line and the shooter.)

Remain in this position and not move or take any part in play (including verbal comments) until the ball has been  released.

Sanction: A further penalty pass is awarded (which may be advanced if it is judged to be delaying play).

If the player chooses to play the ball immediately, the infringer may not take part in play until the ball has been released or make any attempt to intercept the penalty pass.

As you can see from the clip the penalty can be set (after the interference) where the penalized player tried to interfere with the pass or it can be reset on the original spot.

Always to the advantage of the attacking side!