These type of events triggers when a page loads. RMCs tracks page types below. Details for every page view are event explained at these links:
Specialized Pages:
Welcome Page After Sign Up View
Nonspecialized Pages:
For all nonspecialized page types use Generic Page View.
You must define only one of these events for every page type. For example: On your product page you only need to call Product Page View event codes.
Parent Topic: Google Tag Manager(GTM) Implementation