Use Freddy (with Swag equipped, which you can do when the menu is opened in the DeLorean cutscene.) and 80's B.B. for dealing damage to Michael Jackson with the basic Scream attack. The only expection to this is if there are two dead party members, which in that case have them spam Cakes.

Use 90's B.B. and T. Foxy to either guard (if everyone in the party is alive and both 90's B.B. and T. Foxy have more than a thousand LP remaining), use a Large Pizza on themselves (if one of their LP has reached below or close to being below a thousand), or use a Cake (if anyone in the party dies).