How do I want all my friends in the server to use the / tp system and have cool time? Can give an example to me? For example / sethome / home1 / home2 / home3

See Permissions

You'd want to grant the desired permissions to the default group.

What should I do? If I want to return to all players, for example if you re-enter the server, you can use the / tp command, but there will be a cooldown. Can you give an example Like any normal server that I can use.