The AI Settings screen (Game Menu >> Advanced section >> Setup and Options >> AI Options tab) contains options related to the artificial intelligence in your leagues:

These options were all described on the Game Options screen. When editing AI Player Evaluation Options, click the Apply Changes Now button to force the AI to re-evaluate all players based on the new settings immediately. If you do not press this button, the AI will simply start using the new ratings the next time it has a need to evaluate a player.