Add Mcafee Trust Globally

Add the following code to every page of your site to display the floating trustmark and the reviews button. We recommend adding the code before the closing tag in your footer template file.
<script type="text/javascript" src="<a data-ipb='nomediaparse' href=''>"async>

I understand what it is saying but i can't for the life of me figure out where exactly this needs to go.

Thanks in advance.

Enable your my_changes addon.

Add the script tag to

design/themes/[your theme]/templates/addons/my_changes/hooks/index/ (you many need to create the path).

Clear your cache via ?cc or by removing/renaming var/cache directory

Your code should then be included.

As alternative, go to Design -> Layouts page and add new HTML block to the FOOTER section with the mentioned code