How to set the position of the prefab that will spawn?

Question

Unity

There are several levels. On some levels, objects should spawn in certain positions. Levels are NOT scenes, there is a generator script that dynamically generates them. How to do it?

I wrote this code, but since the object is a prefab, I cannot drag the desired empty from the scene.

[System.Serializable]
class SpawnObject
{
    public GameObject Object;
    public Transform Position;
}

    [SerializeField] private SpawnObject[] _objectsToSpawn;