When I make an event that is fired from a focus, what do I have to put in the trigger box? I am making a focus where a country(PFR) wants to subjugate another nation(SAB), and when the focus is completed PFR gets an event where they can either attack SAB or demand their submission. If you choose the second option, SAB will get an event called "PFR Wants to Buy Us!" Where they can either accept snd get puppeted or declare war. 

I just want to know what the "trigger" does. Can I keep it empty or will that rhin the event, because last time I made an event all the text said was "pfr_pfr.1" for the description and title

If the event is being triggered by a focus (or something else, such as another event), then you want to leave the "trigger" blank, and make sure "is_triggered_only" is set.

The trigger is basically the same as an "available" on a focus. Where "available" allows you to take the focus, "trigger" allows the event to fire.

Okay! Thanks for telling me this, I have alot of errors to fix now