How to program the garage door remote control with the receiver - RADIO PROG

How to program a new JCM garage door remote control using the method RADIO PROG
The new transmitter will work the same way like the old one.
You cannot get the new garage door remote control to work in a different way than the old one with this option.
1. Take an already working transmitter (we will call it the OLD one).
2. Place yourself 2 meters from the receiver.
3. Press first 2 buttons of the OLD transmitter at the same time for a couple of seconds and release them (you might hear one beep from the receiver).
4. Now press the first button from the NEW transmitter a couple of seconds (you might hear another beep from the receiver).
5. Wait for about 15 seconds (you might hear a double beep).
Now the NEW garage door remote control is programmed.