Do you have access to the EPD and BMC Support site? Do you have your own or customer (you are working with) Support ID? If so, then log into the EPD and search for the documentation. I am sure that you will find the doc there.
pcm is installable as separate tool, you can have as many as you need - only thing you have to take care is to sync rules between pcm's if necessary, installation package should be found on bmc epd web site under products bppm or pm portal in section named "patrol consoles and infrastructure".