Article: It's at the top of the menu. Again, you'll find this option at the top of the menu. This will allow Resident Evil 6 to pick up from the last saved checkpoint. If you want to select a specific level, select CHAPTER SELECT and then select a campaign and a level instead. Select the SCREEN MODE option, then switch it to SPLIT by pressing right on the controller's right analog stick. If you're on PC, you can click the right-facing arrow next to SINGLE to do this. Press A (Xbox) or X (PlayStation) on your controller, or press ↵ Enter on a PC. Select the character to use, then press the "Start" button on their controller or ↵ Enter on a PC. It's at the bottom of the screen. Your Resident Evil 6 co-op game will begin.

What is a summary?
Select PLAY GAME. Select CAMPAIGN. Select CONTINUE. Change the screen mode. Select OK. Have the other player select their character. Select START GAME.