dcr66 wrote:

Yes, I can enforce passwords if I create all the games, but I do not want to do so
I prefer to let people create their games, so that they can start a game with any of the available scenarios whenever they want without having to wait for me to do it.

Just tell us what password(s) you want to use and we can create the password games for you. Most if not all your participants are veterans of many YouPlayIt Blue Max tournaments in recent years. You are the newer name to us.