PDF HandShake offers a plug-in, which can be used to manipulate the separation plate information in a pre-separated PDF document. The plug-in is called “HELIOS Plate Control”.
This may become necessary when generating PDF separations using Acrobat Distiller 3. However, since modern PDF separation workflows are based on composite workflows with in-RIP separation rather than host-based separation, the “HELIOS Plate Control” plug-in is only provided up to Acrobat 6.
A description of how to use the “HELIOS Plate Control” plug-in for Acrobat can be found in the HELIOS PDF HandShake UB manual.