You can install TrenDemon by using Google Tag Manager. Log into your Tag Manager, click on the account name to which you want to add TrenDemon, and Create New Tag:
1) Sign in to your Google Tag Manager account and click "New Tag":

2) Insert the name of the tag and click on "Choose a tag type...":

3) Choose the type "Custome HTML":

4) Paste the code into the container:

5) Click on "Choose a trigger...":

6) Choose "All Pages":

7) Click "SAVE":
8) Submit the tag:
