What information should Line Managers view under 'Assigned Journeys' tab?

Summary:

When line managers navigate to the 'Assigned Journeys' tab, what information is supposed to populate for their view?

Content (required):

In general, what information will populate under the 'Assigned Journeys' tab, depending on the user's role? For example, as an HR Specialist, I convert a new hire and they receive the Onboarding Journey, so I can view their assigned journey in the tab.

However, if I were a line manager or an HR Specialist who did not perform the conversion, what information will I view under the 'Assigned Journeys' tab? And, how is this access of the data defined?