From the SCDSL Rules and Regulations:
g. Game procedures For all SCDSL games teams will sit on one side of the field and the spectators on the opposite side of the field mirroring their respective team. The Home team will have choice of bench. It is the responsibility of each team to monitor their spectator behavior during each game. Home team can’t be responsible for the behavior of the opposing team. Managers should introduce themselves to each other on the spectator side of the field. If issues arise, managers should handle by speaking to each other and having the manager speak directly to the spectator involved rather than confrontations between spectators.
My comment regarding "who's job" it is was, was jaded by the fact that I referee many SCDSL games and my kid plays in the SCDSL. I appreciate that there is a difference between the various leagues and CSL and Presidio have a different take and put the responsibility on the coach. When parents are on the same side, the Team Manager is the point of contact, not the coach. Ultimately, we referees have a "toolbox" of techniques to get sideline compliance. My personal experience is that I need fewer tool when the parents are on the same side. I can address all parents by approaching a single sideline if I have to control behavior of both (the general rule) ... just much easier for me to scold the kids ... err ... adults acting like kids.
Thanks for the info. We're playing SCDSL this fall so we will get to see how it works first hand. I don't think our manager is aware of the rule, I'm sure she will be thrilled! Of course, its much more difficult to have a confrontation when parents are on opposite sides. Fortunately, parent v. parent confrontations are uncommon.