There you can go to your dyom and press Y then go and go to cars and select add car you browse all planes by press P
and you can browse all boats by press B
and you can browse all bikes by press S
And special is you go to your dyom and press Y then you go to actor and then add actor make your actor ass you wish make actor weapon animation headshot accuracy all select as you want then go to another place and press CTRL+P or P make more actor as you want take more places for make more actor then you make more enemeis-friends-netural actor easy in your mission
thanks for read my tutorial i hope this is help your for make cool missions