unity invoke prefab script function code example
Example 1: unity instantiate prefab
Instantiate(cube, Vector3 (x, y, 0), Quaternion.identity);
Example 2: unity C# instantiate prefab
GameObject prefab = reference_to_your_prefab_asset;
Vector3 position = Vector3.zero;
Quaternion rotation = Quaternion.identity;
Transform parent = parent_of_instantiated_prefab;
Instantiate(prefab, position, rotation, parent);