You can delete unpublished runs from the Completed Runs list.
Notes:
Once you delete a run, you can’t undelete it. Be careful when selecting the run to delete.
Published runs can’t be deleted, but you can unpublish a run. Refer to the Unpublishing Runs article for further information.
To delete a run:
Switch to the Run Manager tab.
Switch to the Completed tab, if it isn’t currently displayed.
Select the completed run that you want to delete.
Click the Delete button. The N-PBS Scheduler asks you to confirm that you want to delete the selected run.
Click the OK button.
The N-PBS Scheduler deletes the run from the completed runs pane.
Deleting Multiple Runs
You can delete multiple completed runs. Only the Delete button will be enabled when multiple runs are selected.
To select multiple runs:
hold the Ctrl key and click on each run, or
click on the first run, hold the Shift key, and click on the last run.