When folding up your Home Dual Shot or Home Single Shot, the Lean Bar will swing up where part #3 and part #7 are connected. To fold your game: put your hand on the underside the Lean Bar (part #9 which has the Control Panel on it) and gently lift the bar up and push it back into place where it will come to rest.
If you are experiencing extreme difficulties, please review the assembly videos for the Home Dual Shot and Home Single Shot at the attached links to ensure you have the game assembled correctly.