Making rooms static

Is there any way I can make some rooms static?
I have made a mobile-friendly website with subject buttons I was hoping I could backlink to ready-made rooms.
Also, how do I clear the rooms that have been put on the blue page on jitsi because I was testing out rooms and they are just random numbers, id like to clear that so I can put a list of room names in there.
Thanks in advance
P.S I was told that the first and last person in the room is admin/moderator if this is true no wonder there is chaos in the chatrooms lol

because im the owner on the jitsi server am I Admin in any room? I do hope so.