If you select New task, the APM creates a work order task based on the information entered in this dialog.
If you select Existing task, select the work order and task.

From standard job: Browse to select the appropriate standard job
From standard task: Browse to select the appropriate standard task

APM constructs a full hierarchy location using the code that you enter in the Hierarchy code box joined with the hierarchy codes for its parent/ancestors. The codes are separated by a period (.). Hierarchy locations are updated whenever the asset or one of its ancestors is moved within the hierarchy (or if a hierarchy code changes).