realy easy
after * it is just coment, dont add it to that event
SelectFaction = $RUS *faction for which event will happen
SelectRegion = $Moskva *affected region
StartEvent = evt_nam_Moskva_Immigration|1|1|NULL|NULL|$Moskva|NULL *name of event , first number is how much pretige you get for that event (but not compltly sure) second 1 is number of repeating (again not sure) null is for picture null is for extra text (or vice versa?) moskva - region on which it will be cenred null - no idea
Actions
ChgPopAristos = 1 *you have here 4 classes with number whcih will be added, modify as you want , yeah it lack serviles but no one want them right ?
ChgPopUpper = 1
ChgPopMiddle = 1
ChgPopWorkers = 1
ChgPopPeasants = 1