What do you have to do when you get all 7 Dragon Balls in the Dragon Ball z budokai game and if i did not get all the Dragon Balls and im missing the first and second Dragon Ball how do i get them

you get the dragonballs by beating the sagas when you do that go to the edit menu go into character customization go all the way to the end and it should say dragonballs if you see all of them there click on the menu and then click on the first dragonball and then it will ask you do you want to make a wish click yes and then make a wish