Hey there! cPanel doesn't provide support for MongoDB so it would need to be installed manually on the server, and would not integrate with any of the cPanel tools. You can find more details on this here:
Installing mongodb is possible on cPanel servers because they are just Linux servers, so you can do that, too If you want to learn how to set it up, there are many wiki articles on the web that show how. To make mongo databases and users, you'll need to use the command line to do it. You'll also have to deal with it that way.