Once the image is prepared you can start to work with hybrid colorways in two different ways: One option is to work with the extra channels only which is set by default. But if you want to work with all channels, simply disable the 'hybrid coloration' in the Colorway options. Now you can view and color all channels.
Hybrid coloring is coloring photographic image files in colors space RGB, LAB, or CMYK with Alpha channel(s) in format PSD, PSB, or TIFF. In order to work with the designs in nT Colorations and get the best result, it is important to respect the file requirements.