Again, you are responsible for what happens and who is on your sideline.
The IHSA has stepped in over the years to handle these issues. Maine South received sanctions for allowing too many coaches on their sideline during playoff games. This led to limit the number of passes on each sideline during the playoffs. After that incident, it was much more difficult to be on a sideline. I know, because as part of the media covering the games, we had to get a sideline pass for the games and there were far less people there. Actually, it was quite nice for someone who is working and trying to move around all the extra people.
But all of that has eased over the past few years. Even at state playoff games, I have seen more and more people, who are just hanging out, watching from the sidelines.
I see the IHSA cracking down hard on Naz to make an example of them and to say that you ARE responsible for your sideline and who is on it.