Photon RPC Call help.

Hi folks, Not a complete newbie (6-7 years of using unity) here, but still come across as a noob often as I'm not the best coder. I use playmaker to get things done that I cant achieve with code.

So, I purchased a PUN Scoreboard asset from the unity store and I'm trying to get it plugged into my game.

I have -

Spawnplayer.cs -

 public class SpawnPlayer : MonoBehaviour {
 
     public MultiplayerManager mpM;
 
     void OnJoinedRoom(){
         mpM.Monpseudo(mpM.playerName);
     }
 
 }

I have slightly edited it to show the playername (set on the mPM) instead of a random guest.

The Script above calls this method from MultiplayerManager.cs -

 public void Monpseudo(string pseud){
     playerName = pseud;
     ShowBoard = true;
     photonView.RPC("ClientAddPlayerToList", PhotonTargets.AllBufferedViaServer, playerName, (0), (0), PhotonNetwork.player);

 }

This Function Creates username and sets a value for kills and deaths to 0.

My problem is I have no idea how the "ClientAddPlayerToList" RPC is defined.

I am able to use RPC to send events to players etcetera but I'm not sure where the "ClientAddPlayerToList" gets defined. The picture below shows my RPC call list but if I was to add my own, how do I define what it does?

I want to create an RPC along the lines of "AddScoreToPlayer" or something, if I could see what "ClientAddPlayerToList" does I think I could figure something out.

Any help is more than appreciated. Been working relentlessly for 2 months on this project.

Thanks, Dan