Modding: How to change leader via focus tree/events

[BreadandYeast]

I want to make my current leader disappear and have another leader come about, if anyone can tell both how to do that with focus trees and events then I'd be grateful (even more if you say which one would be more easier or effective)

[Captured Joe]

Have a program to edit the focus tree files (I use the trial version of Sublime Text)
Find the file of the country in common/national_focus (it's a .txt file but open it with Sublime Text instead)
Add a new focus or (much easier) change an existing focus to add an additional effect to it.
If, for example, you want to replace the leader of the nonalligned party, it'll look like this:
completion_reward = {
create_country_leader = {
name = "(name of the leader)"
desc =
picture = (filename of the portrait you'll add in the gfx/leaders/(countrytag) directory) expire = "1965.1.1"
ideology = despotism
traits = {
}

Save it with UTF-8 encoding, otherwise it won't work.