Snippet from config file:

modules: [
		{
			module: "alert",
		},
		{
			module: "updatenotification",
			position: "top_bar"
		},		


		{
			module: "clock",
			position: "top_right",
			
		},
		

		
		 {
		module: 'MMM-germanwordclock',
		position: 'bottom_left',
		classes: 'User1',
	},



		{
  		  module: 'MMM-ethereum',
   		 position: 'top_right',
		classes: 'User2',
   		 config: {
     		 updateInterval: 30000,
    		  exchange: "kraken",
		
   		 }
  		},



		{
	module: 'MMM-Facial-Recognition',
	config: {
		// 1=LBPH | 2=Fisher | 3=Eigen
		recognitionAlgorithm: 1,
		// Threshold for the confidence of a recognized face before it's considered a
		// positive match.  Confidence values below this threshold will be considered
		// a positive match because the lower the confidence value, or distance, the
		// more confident the algorithm is that the face was correctly detected.
		lbphThreshold: 110,
		fisherThreshold: 250,
		eigenThreshold: 3000,
		// force the use of a usb webcam on raspberry pi (on other platforms this is always true automatically)
		useUSBCam: false,
		// Path to your training xml
		trainingFile: 'modules/MMM-Facial-Recognition/training.xml',
		// recognition intervall in seconds (smaller number = faster but CPU intens!)
		interval: 3,
		// Logout delay after last recognition so that a user does not get instantly logged out if he turns away from the mirror for a few seconds
		logoutDelay: 5,
		// Array with usernames (copy and paste from training script)
		users: ['User1', 'User2'],
		//Module set used for strangers and if no user is detected
		defaultClass: "default",
		//Set of modules which should be shown for every user
		everyoneClass: "everyone",
		// Boolean to toggle welcomeMessage
		welcomeMessage: true
	}
},