Process templates are available only when you select elements that you can start the process templates on.
If nothing is selected, no process templates are available. They appear gray and you cannot start them on elements. For example, when you first open a job, no process templates are available.
When you select an element, the process templates that are appropriate for that element become available. They appear in color and you can start them on the selected elements. For example, when you select a signature, the imposition proof process templates become available.