No. This is one of the big change points.But there will be:
A) A line from the laser to the target and
B) A barrier on that line,
The line is called the midline. It goes from the laser tip to the point where the laser hits the opposite wall.
This is not necessarily pointing to the target. The target point can be any point on the far wall.
A barrier will be somewhere between the laser tip and whatever point is chosen as the target point. (this will likely be an imaginary line)
For C division, 2 more barriers are placed wherever the supervisor wants them. Obviously the barrier setup must be the same for all teams.
The students get to use 1-5 mirrors to bounce the laser and try to hit the target