I made a lobby scene and i would like update the transform position when player disconnect

LIGHTER91

Hello I have a problem 

I made a lobby scene where players enter the room and spawn according to the order of connection so if there are 3 players at the moment you spawn at slot 3 but I would like that if for example the player 2 disconnects the player 3 becomes the player 2 and appears at slot 

Clearly I don't know how to get the right player gameobject to change its position 

3 player connected to the room

player 2 disconnect

and i would like update the transform position for player 3 become player 2

for now this my code

Thank you in advance for your