1. To switch players more effectively, Press & Hold B/Circle and flick the Left Stick in the direction you want to Switch

2. Y or Triangle opens up your Coverage & Defensive Back Adjustments 

3. Right on the "D-Pad" opens up your Linebacker Adjustments

4. Left on the "D-Pad" opens up your Defensive Line Adjustments 

5. Double Tapping any of these, allows you to make "Individual Adjustments"