The way that you open jobs and pre-jobs depends on which window you are in.

If you are in the Job Finder window:

Select the Jobs view to open a job, or the Pre-Jobs view to open a pre-job.
Perform one of the following actions:
Double-click the job or pre-job.
Select the job or pre-job, and from the File menu, select Open Job.
Right-click the job or pre-job and select Open Job.
If you are in the Job Manager window:

From the File menu, select Open.
In the Open Job dialog box, select the job that you want to open and click Open.