CMX 10 in presence mode notification types

There is a question about notification types in presence mode (no location data).

On the Manage Notifications page I see following types of notifications:

- "Passerby Detected"

- "Passerby Become Visitor"

- "Visitor Went Away"

I need to get all the data about all visitors. Is it enough to handle "Passerby Detected" or I need to handle all three notifications?

The goal with presence notifications is that you should go through the state of;

CMX presence testing - how it should work