How to spawn character

i just confuse how to spawn when i click “deploy” like in BF
my game is good enough, but i dont know how to make spawn system

things that im confuse about:

  1. i just thinking if my script that attach in my charachter will gone if im delete it
  2. so if i cant delete it am i must make the player “clone” to make other player that joined in my game

Check this out: Unity - Manual: Instantiating Prefabs at run time