need help on prefab spawning

hi,
i have a situation where at initial i have a prefab, which on clicking by mouse spawns two prefabs. trying to figure it out. need help how to spawn.

To spawn prefab use Instantiate method.
If you want to spawn this object every time when user performs mouse click event, use this code:

public GameObject SomePrefab;

void Update()
{
    if(Input.GetMouseButtonDown(0)
    {
        Instantiate(SomePrefab, Vecto3.zero, Quaternion.identity);
    }
}