Step 1: Create your Google Tag Manager Account
Go to tagmanager.google.com to create an account (or to access an existing account).
Step 2: Create a container for your site in the account
Step 3: Add the container snippet to your site
Use the Webydo ADD CODE feature to add the snippet of code to every page in your site.
Be sure to add it to the Top of Body section to avoid any issues.
Step 4: Publish your site
For further questions about Google Tag manager, please visit: support.google.com/tagmanager