If you have spot colors in your file, you can either preserve the spot colors or convert them to process colors so that the file produces four plates for CMYK output.
In the Other color controls area, enable the Always overprint black check box.
If you choose the Native option from the Output color list box, a maximum of three color spaces are displayed, or embedded, in the PDF file.
The features documented in the Help are available in the full version of CorelDRAW Graphics Suite 2020. Some features may not be available in this version of the product.