If you get more than one attack per [[SRD:Round|round]] because your [[SRD:Base Attack Bonus|base attack bonus]] is high enough, because you fight with two weapons or a [[SRD:Double Weapon|double weapon]] , or for some special reason , you must use a full-round action to get your additional attacks. You do not need to specify the targets of your attacks ahead of time. You can see how the earlier attacks turn out before assigning the later ones.