Add GA Triggers in Google Tag Manager
1. Sign in into Google Tag Manager, navigate to the Triggers option under the left menu, and click New to create a new trigger.
The Trigger section will be empty when you first create a container, and you will need to create your first trigger.
2. Enter a name for the trigger in the Untitled Trigger field and select the type of trigger to use.
3. Configure the conditions for your chosen trigger to fire and click Save to create the trigger.
Following the earlier example, selecting All Link Clicks would cause the trigger to fire every time a user clicks on a link. If you want the trigger to be fired only on certain elements, you could select Some Link Clicks and add the condition to define when the trigger must be fired. For example, if you want it to fire only when Buy buttons are clicked, you could set the conditions to fire the trigger only when the button text contains the word “Buy”. The trigger will then appear in your list of Triggers.
4. Preview the container and perform the action that triggers the tag to fire to test the new trigger.
Open the tag you want to fire with the new trigger or create a new tag and choose the trigger to make the tag fire. Once you perform the action that triggers the tag you will be the event fired on the preview window.