Server hosting

I’ve hosted a server but it was before the dedicated server hosting update. Previously you’d duplicating the example server.bat file and edit it from there and use the dupe to launch the server. But now I apparently just launch the app itself? How do I make it that I can launch it via the old way?
Also, how do i increase the amount of ram the server uses?

New way is better tho. I also had my server on previous but I like new method more.

Pretty sure you don’t. Why would you want to? Not much effort to switch and saves should be compatible.

The less RAM it sues the better? Or do you just want to make sure the server has enough RAM in case it needs io?