You will first need your CNipIT code:
Where do I find my CNipIT code?
Once you have your CNipIT code, you will ideally paste your CNipIT code into the footer of your website.
Option 2 Install the "Insert Headers and Footers" plugin and drop your code in the footer.
Option 3 Add the CNipIT code to your theme (see instructions below). This works but has the disadvantage of: 1) being more complicated; 2) the CNipIT code can be erased any time you update your theme.
Log into the Admin of your site: (www.yoursite.com/wp-login.php)
Find your Theme Header under "Theme Files"
If you cannot find the Theme Header, take a look under "Child themes"
Enter your CNipIT code as shown and click on "Update File"