How to install the Conversion Linker tag on Google Tag Manager (GTM)?

You need to set this tag up yourself on Google Tag Manager, it is not added automatically. To do so you need to:

1. Click Tags New.
2. Click Tag Configuration and select Conversion Linker.
3. Select a trigger. In most cases, you should use a trigger that fires on all page views, or on specific page views where site visitors will land after an ad is clicked.
4. Save and publish your tag configuration.