How to implement the entrance to the conference by entering the conference number?

Question

Asterisk

I would like to understand how to implement a conference, like everyone else: "You give an external number and then give the conference number, the person calls the number and then dials the conference number through # and gets into the conference.

Answer 1

What is there to understand?
exten => _#.,1,ConfBridge(${EXTEN:1})