Generate Custom URL

Hello,
I have installed and configured jitsi-meet and its working fine.

I am looking at customizing the URL for the meeting created from web browser

so if am entering meeting name : MyMeeting, then I want to append a 4 digit random number in the url so it will be like

https://mydomain.com/1234/MyMeeting

Can someone point me to the file which I need to look at generating URL.