A useful tip, imho, that I've heard from two senior referees this year.
If you award a free kick in this position and you are pacing out the distance for the wall, never line the wall up on the edge of the penalty area, i.e. on the white line. Always put them in front of or behind the line so that, if a player in the wall handles the ball, you don't have the problem of deciding whether he/she was inside or outside the box.
If you award a free kick in this position and you are pacing out the distance for the wall, never line the wall up on the edge of the penalty area, i.e. on the white line. Always put them in front of or behind the line so that, if a player in the wall handles the ball, you don't have the problem of deciding whether he/she was inside or outside the box.