Where is chat server address saved and how to disable Updates from Local PC?

I want to install RC on more PCs and I want to preconfigure Server Address - as I know users, this avoid many Tickets - because of wrong server address etc…
I tried to find this in Registry and %appdata% but without luck.

Where (registry ?? appdata ??) can i disable updates check from local PC ? - Im managing SW remotely, and Im testing SW at first and then I install it on all PCs.

Please, take a look at the desktop client README: https://github.com/RocketChat/Rocket.Chat.Electron/blob/develop/README.md#default-servers

There is a similar but undocument procedure to disable autoupdates involving the creating of a update.json file at the same directories recommended for servers.json containing { "autoUpdate": false }.

Thank you, very helpful