The page in the screenshot is from the MM. You do not have to access the GUI of each device. You can drill down to the MD and access the menu in the screenshot from the MM after you attach the controller.
Expanding this for tons of controllers, you can run through the full setup and the controller will be "parked" on the MM. After that, you are free to add the device via Mac address anywhere in the folder structure. You can then configure specifics like timezone, etc. The NTP server should be inherited from the top.
"Show switches debug" will show you all of your controllers and whether or not they have been added to the tree structure.