Spot colors in input files
You will need to evaluate the spot colors in your input files and the spot colors you expect on final output to determine the best workflow to follow. Select the workflow below that best describes your job.

Spot colors from marks in imposition plan

If the marks from your imposition plan contain spot colors that you do not want on the final output (for example, SSiCustom100, Spot 01), in the Process Start dialog box, click Color, and map each unwanted spot color to an output separation.

Proofing spot colors on CMYK devices

When your files have spot colors that you need to proof on a CMYK device, the system uses the spot color's process color information stored in the color database to create the CMYK output. 

For color management information, see Color matching.