You set this up yourself by changing your rushing RE, rushing LE, rushing DT1, and rushing DT2 in the specialists tab of your lineup. The rushing d line is in all nickel, big nickel, dime, and quarters formations. Using the "generate best lineup" button will almost never set this up.
Alternatively, you can manually sub in the players at the formation selection screen by tapping right bumper and moving the players yourself.
Is thereone with LE RE LOLB ROLB at the line?