Online Documentation for SQL Manager for PostgreSQL
Specifying master level
Use the drop-down list to select the table of the master level to which a new level will be added.
Source of new level data
Select the source type of the new level data: Table or Query.
Click the Next button to proceed to the Defining source for detail level step to select a table for the detail level or input a query, depending on whether the Table or the Query option has been selected.