Workflow Line component (1) displays progress bar of the process started on the record along with all related data such as active step general information, form (if it was set as a step(s) layout), assignee(s) etc.
It can be added to record lightning page only. If added to any other page (such as Home, etc.) or to the lightning page of a record with no started process(es) it will display "Nothing to show" message on a gray inactive progress bar.

Component Settings:

• Refresh After Proceed (2) - refreshes whole page after successful proceed. This means that if active process step(s) has after step action(s) updating context record or Save Form on Proceed Step form setting is turned on (in case process step layout type is Form) updated data will be displayed on record details once process step is completed.
• Refresh After Form Submission (3)- refreshes page after form save action executed successfully (either standard Save form button or custom button triggering Save form API action).
• Entire height for Form (4) -  displays form(s) tied to process step(s) without vertical scrollbar (100% height).
• View Mode (5) - select component view mode. This extends the process setting for Component type: Click to read. Default option is "Inherit", but it can be implicitly set/overridden for a particular instance of Work-Relay Workflow Line component.