Go to https://tagmanager.google.com/ and login with your personal login details.
In the Google Tag Manager UI, in the menu option Workspace > Tags, you should now see four tags. You now need to publish them.
To start the publishing process, click the Submit button.
Next, click the Publish button.
Click Continue on the next screen.
You’ll then see this screen while your changes are being published.
Finally, you’ll see a confirmation of your publication.
Your Google Tag Manager Property is now published. The last thing to do now is to setup the Google Tag Manager Tags on the Platform Demo website so that the Google Tag Manager configuration is being loaded.