msys for Setup related job sets are containers for jobs that are generated for "Commit updates (scheduled)" or "Commit undone updates (scheduled)" tasks. Job sets are listed in the list view of the workplace when the jobs folder has been selected in the resource tree. Depending on your job authorizations (see Job management) you can see your own job sets only or all job sets.
For the overall structure of the resource tree see Resource tree and list view.
Job set specific File menu items
When you have selected a job set in the list view, the File menu contains these specific menu items:
Tip: You can also right-click the job set object to bring up its context menu.