Note: For older versions, the Colour Keys panel was located in the Pagesetup Workbench item. This has since moved to the Jobticket for more recent versions of the software. 

For the older versions: 

1. Open the Workbench application.
2. Select Pagesetup in the Workbench datatypes list.
3. Choose an existing Pagesetup to edit or create a new one.
4. Go to the ColourKeys panel.
5. Enable ColourKeys.
6. Select the plate or plates from the available list.
7. Click Add to create an entry in the Plate Combinations list. 
8. Repeat with the plates as desired.
9. Deselect a single plate by clicking the plate again.
10. Choose the Deselect button to deselect all plates currently selected.
11. Save when finished.

For the newer versions: 

1. Open the Workbench application.
2. Select Jobticket in the Workbench datatypes list.
3. Choose an existing Jobticket to edit or create a new one.
4. Go to the ColourKeys panel.
5. Enable ColourKeys.
6. Select the plate or plates from the available list.
7. Click Add to create an entry in the Plate Combinations list. 
8. Repeat with the plates as desired.
9. Deselect a single plate by clicking the plate again.
10. Choose the Deselect button to deselect all plates currently selected.
11. Save when finished.