Zombie Wave Spawning

Im a novice unity user. Im trying to make a game where there are waves of zombies that spawn from random locations once the previous wave is finished (all the zombies are gone). I think I need to use the Instantiate command, but i cant be sure. I have a prefab called “Zombie” that i want to spawn. Thanks in advance!

Check the Instantiate documentation. The first example shows how to “spawn” 10 objects.