Creating a Color Input (CI) in your color setup is optional. It may be useful if, for example, you receive a CMYK input file that exceeds the maximum ink coverage of your press because it was incorrectly separated from RGB during the design stage. In this case, by defining a CI, you can choose to reseparate your received CMYK content in order to assign a more desirable Total Area Coverage (TAC) value to your press-ready separations. In Prinergy, you can use the CI you created as the source space to reseparate input files to the destination color space of the PCO.