Jitsi-Meet entry point

Pardon me for a novice question. I have setup jitsi-meet on a server and its working fine so far. Tried the jwt token authentication but I couldn’t get it to work. Even with same url, the users could never get into the same conference - the join room never worked I guess. Anyway, I want to implement a different kind of authentication and validation and am looking for an entry point where the room init starts.
When a room url is hit, there has to be some starting point in the code where I can add this right? Just need to figure this out so that I can have my own implementation. Any directions for this?