Trigger to change default chat option?

For some reason, my map has decided to stick everyone on the 'Allies' chat option at the start, even though they don't have any, they're just on the same Force. Anyone know of a trigger I could use to change it to 'All' instead, so that no one becomes confused as to why no one is responding to them?

Im pretty sure that is the default setting for everyone when a game starts. Most people are smart enough to know now that you need to switch it over when the game starts if they want everyone to hear when they have no allies. Sadly I still remember wondering why my friend wouldnt respond to me for half a game when we use to play together until he would say "Dude do you have it on allied chat still?" ^_^