Hi Warren,
The parent group name (dbo.jobmst.jobmst_prntname) can be found within jobmst table.
For example, the below query will return parent name of a specified job:
SELECT dbo.jobmst.jobmst_prntname
FROM dbo.jobmst
WHERE dbo.jobmst.jobmst_name = 'Enter name of job here'
BR,
Derrick Au