As per my knowledge, Pega doesn't have any direct wizard or OOTB feature to monitor the traffic of specific screen(widget).

Though, you can leverage auditing feature according to your requirement. 

In your implementation, you could classify each of the UI screen belonging to a specific flow action and then monitor the traffic of it.

How to log each use of harness and flow action rules

The Pega 7 Platform maintains a history of changes to certain data classes and rule types.

For example, you can record the name of the application rule that is referenced in an access group each time a user updates the Access Group form and adds, changes, or deletes an application rule name.

Auditing in Pega Platform

Hope it helps. Kindly acknowledge if it does by marking this reply as answered/helpful.