How do I set the Profiler as Master in a Recording Setup?

Main Manual 8.5 page 130:

·       Audio and clock signals share one S/PDIF cable per direction of signal transmission. If your PROFILER slaves to an external clock, but sends an audio signal for recording, you will need to connect two S/PDIF cables to avoid crackles and other artefacts. You will also need to connect two cables if the PROFILER is configured as clock master but is receiving an audio signal via S/PDIF. We recommend purchasing two S/PDIF cables and leaving them permanently connected.

OK, i need new glasses .
In fact i did dot look in the chapter reamping as i thougt it must be in the input section