Help Increase the frequency of raid bosses

Hello, I work a lot in life. But I can’t find where it can be in the files…

I would like to do something like this “Increase the frequency of raid bosses”
I am asking for help in what files it is and what lines I need to change, I am asking for a quick guide.

file : gameengine.dbr i changed it : Edit
championDifficultyModifier,100.0;120.0;140.0,
spawnMin,6.0,
spawnMax,6.0;7.0;8.0,
spawnMinModifier,
spawnMaxModifier,
championMin,4.0,
championMax,4.0;5.0;6.0,
championMinModifier,
championMaxModifier,100.0;110.0;120.0,

And now I need to make bosses. somebody please help greetings…