In some cases it is useful for the job to be displayed on the press (in the job list) as soon as possible. One example would be if the plates and the color profile for the job are not yet available, but the job should already appear on the printing press (in the job list) for planning purposes. This gives the operator an advance overview of which jobs are due up next.
By default, however, the job is only submitted to the press when all required resources for this job are present.
You can find a detailed description in the section Clusters.