The Switchboard Action “Pre-separated pages” under the “Prepress” group lets you convert one page into individual pre-separated pages. For example, this can be used to turn 1 CMYK page into 4 individual pages, one for each separation. Spot colors are also supported.
However, it is not possible to process other color spaces such as RGB or Lab.

To begin this Switchboard action, simply click on the corresponding button.

The result will contain the required number of pre-separated pages for each input page. This example shows the cyan separation.
The file will also contain a corresponding internal entry at the page level (“SeparationInfo” and “DeviceColorant”) to allow output devices (such as imagesetters for printing plates) to identify and output each separation.