How to stop players spawning in the same place in Photon?

Questions & Answers
1

I have this to spawn the player at one of three spawn locations (there will be 3 players), but how do I stop players spawning in the same spot?

public void OnJoinedRoom()
    {
        if (PhotonNetwork.playerList.Length == 1)
        {
            Debug.Log("2 Players In Room Starting Level");

            number = UnityEngine.Random.Range(1, 3);


            if (number == 1)
            {
                spawnpoint = GameObject.FindWithTag("spawnpoint1");
            }


            if (number == 2)
            {
                spawnpoint = GameObject.FindWithTag("spawnpoint2");
            }

            if (number == 3)
            {
                spawnpoint = GameObject.FindWithTag("spawnpoint2");
            }
        }


                GameObject myPlayer = PhotonNetwork.Instantiate(playerprefabname, spawnpoint.transform.position, spawnpoint.transform.rotation, 0);
2

last_number = number; // number should be renamed "spawn_point

if(number == lastnumber) {
number++; //(be careful not to go out of bounds)

last_number = number;

}