[Help] BOT System

[ILowe]

hello

I saw in some games.
The chat over bots throwing pm.
working with some commands bots

Examples chat;
$BOT teleport

and bots him teleporting
and there's a lot more command

How is this system? How is it done?
I saw most places but could not find the internet.

If you have an idea that I've been waiting on this issue, please post
Thank you