Sign in to your Squarespace account to begin the process.
Once in your dashboard, go to the 'Pages' section.
Then, navigate to 'Website Tools'.
Select 'Code Injection' from the options available.
Ensure you have the tracking pixel code that was provided to you.
In the Code Injection area, find the 'Header' box.
Paste your tracking pixel code into this box.
Click on the 'Save' button to apply the changes and this will activate the tracking pixel on your site.