But yeah, it works brilliantly… although I have quite a lot of Smartthings items… so the list goes all down the entire side of the screen, covering Compliments - Lower 3rd, and news feed - bottom bar. … so will need to make another post to find out how to reduce the font size using CSS.

Thanks again Sam… you have helped restore my interest in MM again, with your help on several of my posts.

but who am I to contradict the developer of that module?

well, you have to read what he said, you copied too much… LOOK like this (his is correct), not BE EXACTLY this (as he only had one module)

read the modules for beginners
https://forum.magicmirror.builders/topic/4231/how-to-add-modules-for-absolute-beginners?_=1592186111969

That did it… I just knew there were too many brackets, but who am I to contradict the developer of that module?
Thanks so much for pointing me in the right direction.

{
              module: 'MMM-Smartthings',
              position: 'top_left',
              header: 'Smartthings',
              config: {
                personalAccessToken: 'MY TOKEN GOES IN HERE',
                capabilities: [
                    'contactSensor',
                    'lock'
                ],
                title: "Doors & Locks",
                excludedDeviceNames: [
                    'Sense-', // Contains this text
                    'Virtual Lock Test' // Or is a specific device label
                ]
              }
        },

{
module: 'calendar',

How the instructions said to do it!

       'contactSensor',
                    'lock'
                ],
                title: "Doors & Locks",
                excludedDeviceNames: [
                    'Sense-', // Contains this text
                    'Virtual Lock Test' // Or is a specific device label
                ]
              }
        }
    ]
},
{
module: 'calendar',

>                     'Virtual Lock Test' // Or is a specific device label
>                 ]
>               }
>         }   < -----
>     ] < -----

well, ya got a few extra things in there

every { needs a } and every [ needs a ]
extras not allowed

This is how it looks on screen

/* Magic Mirror Config Sample
 *
 * By Michael Teeuw http://michaelteeuw.nl
 * MIT Licensed.
 *
 * For more information on how you can configure this file
 * See https://github.com/MichMich/MagicMirror#configuration
 *
 */

var config = {
	address: "localhost", // Address to listen on, can be:
	                      // - "localhost", "127.0.0.1", "::1" to listen on loopback interface
	                      // - another specific IPv4/6 to listen on a specific interface
	                      // - "0.0.0.0", "::" to listen on any interface
	                      // Default, when address config is left out or empty, is "localhost"
	port: 8080,
	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1"], // Set [] to allow all IP addresses
	                                                       // or add a specific IPv4 of 192.168.1.5 :
	                                                       // ["127.0.0.1", "::ffff:127.0.0.1", "::1", "::ffff:192.168.1.5"],
	                                                       // or IPv4 range of 192.168.3.0 --> 192.168.3.15 use CIDR format :
	                                                       // ["127.0.0.1", "::ffff:127.0.0.1", "::1", "::ffff:192.168.3.0/28"],

	useHttps: false, 		// Support HTTPS or not, default "false" will use HTTP
	httpsPrivateKey: "", 	// HTTPS private key path, only require when useHttps is true
	httpsCertificate: "", 	// HTTPS Certificate path, only require when useHttps is true

	language: "en",
	timeFormat: 24,
	units: "metric",
	// serverOnly:  true/false/"local" ,
			     // local for armv6l processors, default
			     //   starts serveronly and then starts chrome browser
			     // false, default for all  NON-armv6l devices
			     // true, force serveronly mode, because you want to.. no UI on this device


modules: [
{
module: 'alert',
config: {
// The config property is optional.
// See 'Configuration options' for more information. 
                  }
},
{
module: 'clock',
position: 'top_center'
},
  {
              module: 'MMM-Smartthings',
              position: 'top_left',
              header: 'Smartthings',
              config: {
                personalAccessToken: '*****-*****-*****-*****',
                capabilities: [
                    'contactSensor',
                    'lock'
                ],
                title: "Doors & Locks",
                excludedDeviceNames: [
                    'Sense-', // Contains this text
                    'Virtual Lock Test' // Or is a specific device label
                ]
              }
        }
    ]
},
{
module: 'calendar',

^^^^ Above I tried with single quotes, having already tried double quotes as was indicated to

module: "MMM-Smartthings",
              position: "top_left",
              header: "Smartthings",

one little check…

To use this module, add the following configuration block to the modules array in the config/config.js file:

when u added, did the module block BEFORE have a trailing , (more coming),
if not YOU need to add it

if where you added yours, there is stuff AFTER, does THIS module block have a trailing comma (more coming), if not YOU need to add one

run the config checker

cd ~/MagicMirror
npm run config:check

when u see ‘unexpected token’, that means the line before is probably missing its comma, (more coming)